Former Illidan Alliance here wishes you the best of luck! I would join you, but Illidan kind of scared me away from imbalanced PvP servers for the meantime at least.
I must say, I love what you guys are trying to do. Also love that multiboxer who rolled on Illidan Alliance and goes around ganking Horde there. Same with that multiboxer who rolled Horde on Darkspear and is killing and camping the Alliance there.
We need more of this, that's for sure.
I do know, though, that the people on Illidan Horde tend to be extremely BAD at PvP, so I'm sure it is the same for Mal'ganis.