To some extend LFD
Levelling. Blizzard know this is a problem already, but have no idea how to really tackle it.
The free level 90 is there entirely so a new player can get to the endgame before it starts asking for subscription fees. That kind of fixes one half of the levelling problem. Now a new player can experience the endgame a bit.
The second part of the problem is that every bit of content that comes out completely negates everything that's gone before. New expansion? Well I guess those previous 30 raids are a bit pointless now!
But what of the world? What of the quests? Well, what of them? They'll still be there. You can do them for the story. Even transmog gear. You just wouldn't be *forced* to do them for 3 months before you can actually play. You wouldn't find halfway through a zone that you might as well abandon that quest chain and story because the quests are now grey to you. You won't go back for the Loremaster achievement, and find it too easy to be any fun.
I want all queue systems gone and replaced with listing tools like the original LFG and the new LFG that they are developing for warlords.
Anyway if i could remove anything it would be everything i have to pay for, besides subscription. I mean mounts, those stupid helmets, pets and all the horrible things that are comming...
Remove -> Stupid amount of CC and extensive amount of abilities
Change -> PvP system. Especially gearing. Disallow selling arena wins (ban them or whatever) same goes to RBG. Remove or improve 2v2 bracket. Dampening? Battle Fatigue? Base Resil? How many more stupid 'systems' there is yet to be seen in PvP. It takes about 18-24k honor points to actually start having fun...
changed: pvp, it's all about cc and spam disables
The community (toxic sons of bitches) and quest helper which negatively influenced a great deal of an immersive world.
What is worth fighting for?
Leveling has a purpose in that it teaches you how to play or at least it should.The free level 90 is there entirely so a new player can get to the endgame before it starts asking for subscription fees. That kind of fixes one half of the levelling problem. Now a new player can experience the endgame a bit.
I want elitists removed from the game, mind you I don't mean the Elite. There is a difference. Elite players are very good at the game, the best skill. Elitists are very good at the game and can't feel good about it themselves unless they can imagine that playing world of warcraft better than someone else makes you more important. Its like being the skinniest kid at fat camp. These people spend their days pooping on their own rose bushes because they think their shit smells better than the roses.
Get rid of the elitists asshats would be the best thing to ever happen to wow. No toxic behavior. Nobody feeling entitled to special rewards and attention.
Cata Archaeology's ridiculous RNG. RNG is fine, but not that much of it.
Other than that, hard to say anything else really until we see what endgame in WoD is like.
Removal of the need for a trinity in all random-queue content. Make them work like Scenarios, both Dungeons and LFR, while adding a Heroic pre-form only version of Dungeons. Then, normal scenarios and dungeons and LFR all get nice, short queue times and no need to stress about every little thing, and the tanks and healers can all skate through other content modes if they don't want to get their tootsies dirty with the random crowd, or just run DPS in the randoms to gear up to tank/heal in organized content.
Go back to 1 raid difficulty and make it heroic.
Flying mounts should be changed - 15 minute cooldown.
That way you can still travel, but no more hopping around.