i think you should get some experience every time you get a kill and this experience can build up to levels and levels can buy you stuff like new guns, super spade, knife, new grenade, claymore,spawn beacons, more blocks and im sure you guys from ace of spades and you guys reading this could come up with more ways exp could be spent. so please reply with suggestions towards this idea!
i talk a bit about spawn beacons and squads in this thread:
viewtopic.php?f=234&t=11653
-thanx cberthebaud