Inspired by http://us.battle.net/wow/en/forum/to...0276162?page=1
While I loved MoP, I feel it could have been improved in some ways. Please try to keep the outcome similar so Warlords can happen and be fair to both factions! Constructive criticism is welcome to anyone's as long as it is presented in a polite way.
Pre 5.0: The focusing iris is given to Garrosh as a show of strength by his new servant Malkorok. Garrosh admires the strength required to obtain it, but is disgusted by Malkorok's suggestion to use it against Theramore. Garrosh still invades Theramore, but decides to do it in the way of the warrior, which encourages many Trolls, Tauren, and Stonemaul ogres to join his invasion force. When it is clear that the Kirin Tor and Blue Dragonflight are helping the Alliance, Garrosh gets his spy Thalen Songweaver to use the Focusing Iris to kill Rhonin and Jaina. However, Malkorok deliberately botches the message to "destroy Theramore with the Focusing Iris," resulting in the destruction of Theramore and murder of countless citizens. Garrosh discovers Malkorok's betrayal, but keeps him alive to be punished later, as he cannot lose the Blackrock now. This causes him to doubt his responsibility, but he decides to keep the position to not look like a coward.
Wandering Isle: The Tushui travel to Ironforge, where they are admitted into the alliance by Muradin Bronzebeard. Their trial of combat is to fight an Alemental summoned by a Wildhammer shaman. The Huojin travel to Thunder Bluff, where their trial of combat is fighting the Spirit of a grand Thunder Lizard. I feel these cities are a bit more suited to the pandaren due to the residents' similarities to the Pandaren.
Jade Forest: Ji and Aysa join the expeditions to Pandaria. Also, the Horde gets Mogu that honor the memory of Emperor Tsao who didn't crop up until after the rebellion, but keep the rule by strength philosophy. Nazgrim becomes great friends with their leader. Hozen join both factions, just different tribes (Riko is too awesome to be ignored). Alliance story in Jade forest remains mostly the same, but Horde Warlocks are not abducting children, as we all know Garrosh condemns fel magic. Instead, their Cloud Serpents are being bound by Dragonmaw Orcs. Dawn's Blossom is also the established capital of the Pandaren and a sanctuary city where trainers for all professions can be found. The Sha of Violence and Doubt's roles are switched because doubt makes no sense for a big battle. Hordeside, there are a lot of references to the fact that the people of Durotar are starving and they need this land. Alliance-side, there is a lot of reference to needing to help the citizens of Theramore recover without screwing over the already existent efforts in helping Gilneans.
Valley of Four Winds: Instead of just having the farm, the Horde and Alliance each have small embassies in Halfhill. These are led by Ji and Aysa.
Krasarang Wilds: The Night Elf sentinels fully support the pursuit of immortality. Unfortunately, it fails just as it was supposed to. The neutral Jinyu settlement is replaced by a Hozen village called Wakkarikk that is under attack from Saurok.
Kun Lai Summit: Instead of Eastwind and Westwind, Alliance gets a Jinyu lake called Inkgill Retreat, and Horde gets a new Mogu settlement called Tsaobao. The Yaungol are allied with the Shado-Pan against a bunch of tainted Yaungol and even a few Mantids from across the wall. The Zandalari storyline is mostly the same, but there are Mogu that help the Zandalari attack Zouchin as well. The lower portions of this zone are mostly rock with a bit of persistent red and brown grass.
Townlong Steppes: The zone resembles the lower portions of Kun Lai summit in the real game (I dislike the current look). The Yaungol here are mostly Sha corrupted, but a few strongholds of uncorrupted Yaungol remain. One of them is slaughtered by the Shado Pan member who you chase into the zone. Instead of PvP vendors along the wall, there are the Mogu's Yiqun Tower for the Horde and Worgen's outpost called Bloodfang Redoubt. Some of the Shado-pan companions for the dailies are now Yaungol, as well as a faction companion for Horde and Alliance.
Dread Wastes: There is a Twilight's Hammer holding on an island west of the Heart of Fear. It is called "The Seven's Breath." Some Klaxxi dailies now involve killing the cultists here and freeing Klaxxi experiments. Lore-wise, the island is purged by 5.1. This is why they do not make any moves to steal the Heart from Garrosh.
Vale of Eternal Blossoms: The Shrine of Seven Stars is now Jinyu themed, although it is clear the Mogu built it. Otherwise, the zone remains the same.
5.1: The Horde and Alliance outposts are shown to be unfinished. However, there are also scores of Hozen and Pandaren soldiers being trained in both holds, as well as Mogu and Jinyu soldiers. Ancients and Magnataur are used as living siege weapons. Domination Point is renamed Bloodhilt Point (Seems a bit less villain-y). Mixed in with the Orc forces that follow Garrosh are some Goblins and Taunka. The hold itself also has Blood Elf arcane sanctums and Forsaken apothecary tents. Lion's Landing also home to an Ancient of War that the Night Elves train under and a Dwarven foundry. Dagger in the Dark is now about learning where the Divine Bell is, as the Mogu already said how Saurok came to be. A Little Patience is replaced by Rumble in the Jungle, where Tyrande teaches Varian how to fight in Guerilla warfare. Ishi is replaced by a Taunka warrior to add some diversity to the "True Horde". The story goes similarly otherwise. When Garrosh sees what the Divine Bell does to his warrior, he is shocked and lets Anduin destroy the bell, but is pleased when it crushes him. He orders his forces out of the area and starts planning an excavation in the Vale. Little does he know that the part of his mind encouraging this is not his own.
5.2: The isle is slightly expanded to house a medium hostile Mogu settlement in the center of the Diremoor. In the center of this, there is a titan statue-forge that is home to you guessed it... statues. A group of Mogu accompany Lor'themar on orders from Garrosh to stop him from rebelling. They issue PvP quests. Jaina is accompanied by a few Jinyu, who want to focus on fighting the Mogu, while Jaina issues PvP. The Shado-pan assault, meanwhile is pissed with both factions for trying to use Mogu technology, but begrudgingly works with them.
5.3: Horde-side, Rexxar actually appears! The Alliance version is radically changed. Instead of just Robocat, Sully and Amber discover the Iron Juggernaut. They plant a bomb on it and program it to explode when it is about to attack. Instead of being sent to Vol'jin, they are sent to some Night Elves near Southfury. They stealthily take over the river from Garrosh's loyalist Taunka and Dark Shaman, then witness the end of Razor Hill. After the rebels take the hill, the Iron Juggernaut comes in, and Vol'jin quietly says "Well... we made it far." The Juggernaut then explodes due to Sully's bomb, saving the rebellion. Vol'jin then says to the air, "Whoever did this... tank ya." Right when things are going well, the fighting force of the Mogu suddenly arrives, having been sent by Garrosh to crush the rebellion if the Juggernaut failed. In a twist, they join the rebellion, remembering that Tsao would find Garrosh disgusting for treating his subjects poorly. With this, the Rebellion and Alliance win the day. Instead of reporting to Vol'jin with supplies and getting Troll goodies, the Alliance reports to their Night Elf friends and gets Night Elf-themed goodies (ex. Instead of Hydra pet, you get a Chimera pet). Battle on the High Seas is replaced by an Alliance-only scenario called "Before Battle" where you disguise yourself as a Kor'kron and infiltrate the barracks. Here, you sabotage his War machines and kill his Magnataur. The final boss is a giant Magnataur with a thunderforged pike. Horde scenarios go the same way.
5.4: Nazgrim and the Klaxxi help fight the loyalists. However, Nazgrim only joins mid-siege and is killed by Garrosh for being a turncoat in an emotional scene right before the Garrosh fight (we don't have enough of those). We are forced to re-seal the Klaxxi before fighting Garrosh when he uses the Heart of Y'Shaarj to control them. The reason Garrosh uses the Heart is because his subconscious if being effected by Y'Shaarj, promising Horde supremacy if all Titan-related races are subdued (He is not corrupted, his mind is strong enough to refuse this offer). When the Heart is destroyed, Garrosh realizes what happened and is furious about being manipulated. He goes with Tara Zhu peacefully, but swears revenge. Concessions are made after Garrosh is put in prison with the Alliance getting Ashenvale back and a large sum of resources. However, the Horde keeps Azshara and is allowed to rebuild Orgrimmar. The story unfolds the same way afterwards, leading into War Crimes and Warlords of Draenor.