Faction Imbalance will cause big issues
I know you guys at the dev team probably don't give 2 ****s about this.
Outland is at least 70% Horde, if not more. In my time leveling i encountered only very very few alliance players. 2 friends of mine rolled alliance and they basically can't level because every single zone has 5 hordes for each alliance players, sometimes even worse.
Horde is looking at 2 Hour+ queues for BG's very soon.
If you guys want to do something about this, offer free faction change to Alliance, block horde character creation for a few weeks (except for alts ofc) and offer alliance players a free 60% mount.
I have played on a few servers with such a bad faction balance and it can definitely snowball the server to death.