Legiong client, the coding is there, they just have to put the data of the garrison into the data base and put it somewhere in the accessable world, its doable!
So why not all the changes?
You want to cross realm grouping which was from after wotlk, so why stop there, ALL THE CHANGES! lets add in reforging as well so i can turn my haste into more armor pen or crit! And void storage, materials stacking up to 200, the resources bank tabs, oh transmogs, and more!