Hello there.
Just like me you have probably read far to many threads about what WoW needs to improve. "Ooh its this thread again" you might think now.
Well my idea is very simpe in terms of presentation:
We need a new big epic world
What made wow unique and loved by me from the start was that you entered a world. With expansions and flying mounts its been alot more as if you have entered 1 new zone. Sure we dont have flying in WoD which I very much approve of but the garrison defeats the purpose and makes the world close to irrelevant once you're level 100. I think a world that has the size of 3x Pandarias or Outlanda and the level cap be 30 increased levels rather then 10.
In addition to this I belive Blizzard need to make the bold move and remove the ability to queue from the menu. It defeats the purpose of being an MMO game.
To queue for battlegrounds needs to be outside where you can duel, showoff and meat and chat with other players.
Sure alot of people wont be happy that it will require more time and effort into doing a battleground, dungeon or the rest.
But if it takes you 10x times as long to gear up it doesnt matter because it takes 10x as much time everyone else as well.
Interaction with other players is key and putting effort by actually taking a flight path and run to a dungeon will give you a better feeling of accomplishment and a higher will to communicate and finish the dungeon.