Do you really want a list of what the Alliance wants/needs?
In brief and in broad strokes we demand:
- The Kingdom of Kul Tiras with his powerful naval fleet commanded by his Lord Admiral Tandred Proudmoore
- The kingdom of Stromgarde with the return of Danath Trollbane to stop the Forsaken advance
- All the exiled high elves reunited and led by Alleria Windrunner being an important part of the Alliance (and the High Elves as a playable race)
- Turalyon's return and the restoration of the Order of the Silver Hand headed by him. Making the paladins the representative class of the Alliance and Turalyon their champion
- The apparition of Queen Calia and her Scarlet Dawn to fight for reclaim Lordaeron
- Greater involvement of the Kirin Tor and Dalaran in the affairs of the Alliance, landing Dalaran over the Theramore ruins
- More personality and self-sufficiency for all the non-human races, unlinking them somewhat from the Stormwind humans (Varian) making them less human dependent (specially the Nigh Elves) and giving them a greater role and prominence (for example making the Night Elves recover Ashenvale)
- Related to the previous point, more lore for all races, not just for the humans of Stormwind, with an emphasis on the forgotten races (gnomes, draenei, etc)
- Reclaiming the Kingdom of Gilneas for their legitimate owners, which are not mascots of the night elves. Greymane City as a new fully capital city for the Alliance
- Reconstruction of the district destroyed by Deathwing in Stormwind (perhaps making a elven district as "capital" for the Quel'dorei)
- Making gnomes having finally have a decent capital: conquer Gnomeregan or re-found it elsewhere (a flyer technological robo-city for example)
- Expel the Dark Iron dwarves of the Alliance or at least create some conflicts with them. They have been a treacherous and dark race and an enemy of the other dwarf clans for generations, thus they can not be trusted of day to the next
- ...
What else can you think of?