It would be nice if the Phoenix had just a small flash to denote where it is and a small amount of invincibility. I often found that if my first bird died, the other birds were going to die by the hands of the same aircraft.
Extra Turrets don't seem to be that useful.
1) Way too hard to defend.
2) Can't be controlled, which makes juggling MORE unpredictable which is not useful in a survivor type game.
I definitely had a turret buddy shoot a meteor into my unshielded main turret. D:
Wow... the number of times an enemy AI gets a hand grenade and throws at point blank, kills both of us, but since it counts as a suicide I don't get the credit for it, and now I have to fight a fresh opponent...
Please count suicides as points in survival.
The lack of control makes healing extremely useless. If you can't keep a bot off the frontlines without constantly tell him to run away, you might as well have him attack.
You might want to consider having a few different AI choices that the user can pick through as they are constructing the bot.
BotTank: Pursue Closest Enemy
BotHealer: Keep Distance From Enemy (while still keeping them or allies in own range of fire)