Hope you decide to come on over! Alliance is pretty awesome at the moment. Lots of folks are playing the new expansion so Stormwind is a bit quiet this week and probably next, but there’s still plenty RP to be had.
Here’s a great place to get started: WrA Information & Directories - #35 by Nevelis-wyrmrest-accord
And if you’re looking to find some RP in game, consider the LFRP community: [A/H] LFRP the In-Game Community