Honestly, my 2-cents, the simple-est fix I think would be a smart-advanced diminishing return formula into the perk point rewarding system. Not really simple since I think it would a big chunk of code and a bit or rewriting of other code, but in the end it would/could reward .01 perk points for your 20th kill within an hour on the same pilot, upping from the same field, in the same arena (without IE: ~20-other kills contributed from a different 10-pilots). I think an advanced enough formula can be made smart enough (fine-tuned) to distinguish between fighting hordes at tank town to farming ~80 kills from the same 3 or 4 players (at most) within an hour.... maybe even possible to code in a way to reward for culling hordes (many planes and many different players within a very short period of time), nothing as even a 5-10% boost would see very noticable gains to players during prime time playing.