You guys are simply asking for "more perks" then? We could also increase perks per kill then... but like someone mentioned earlier: You would have to increase perk price of planes too, thus resetting all your additional gains.
Perks are a gratification for success. An assist is not. Kill the enemy, and you will get the reward. Get better and increase your kill/assist ratio, and you will get more, instead of just asking for more.
No i'm just aying it would be nice to get a little reward for the guy i spent 5 mins fighting just to have some friendly dive in a take my kill.
And really would it hurt for us to get a few more perks? I can't see getting a few extra perks unbalancing the arena's at all.