I'd rather see Varian follow up on his Siege comments and actually do something about Gilneas itself. It's big, amazing zone with very large city which remains pretty much unused for years now (just couple of undead quests, part of rogue legendary and phased/instanced worgen starting zone). Such a waste :/
Also, I'm worried that Gilnean architecture would really stand out in Stormwind - not sure if in good or bad sense. So far Stormwind style is rather uniform - adding district not matching rest of the city might not look as cool as we hope.
Personally I hope for some airship docking area. Skyfire, Skybreaker and others - those are some of most impressive and awe inspiring machines Alliance has. Surely they deserve some more spotlight. It would also expand on idea of Stormwind docks being launching point of Alliance operations (think Northrend/Vashj'ir/Twilight Highlands/"Tides of War"). And how awesome would it look from Mage District vista point