That was more of a mini wall, or wall lite. I did just make one in the behavior thread however.
My experience with population, and general realm populations, has always favored Alliance. All through Classic, they outnumbered Horde big time. We didn't start to catch up until BC, where getting Paladin finally balanced things better and brought more players to us. BC really was the best of WoW, but I wouldn't mind restarting with Classic and doing BC again later. Undead and Orc do have good racials, which are actually my favorite races just from lore and cosmetics too, but as a whole, Alliance were better. Raiding as Horde without that Cleanse was a whole additional level of difficulty itself. That's on top of the magic bubble guaranteeing them survival in situations where a Shaman would have died. The Shaman instead has a revive, which isn't as helpful. It's main use is to revive after wipes, but you already have that with Soul Stones, unless you brought 0 Warlocks in a 40(later 25) man raid.
Looking at the population during the beta test will be more accurate. Looking at real live numbers, as I said before in a different thread, is as accurate as you can get. Anyone interested in the server will most likely try it. I'm sure Nostalrius plans to track the population 24 7, which should be easy for them to do.