I've noticed that the first tab you see when joining online is the Free tab, which is usually empty.
I think it might be a good idea to have the Tab that the Melee Arena sits in be the first one for several reasons:
1. New players to Aces High who haven't played yet might not notice the tabs up top and think the entire game is dead, so why buy it?
2. New players who first notice an arena with over 150 pilots might stick around and subscribe faster!
3. It is easier for most of the community to have the Main Arena as the first one to click without tabbing every time