Should change barbarian dynamic a wee bit. Give 50 bonus imps per mission that you clear for barbs, only collectable after u clear all of the barbs. So 2 mission barb fight would reward a bonus of 100, a 4 barb fight 200. This would give more incentive to clear barbarians for friends. It also would give a bit more imperials vs experience for lower lvl players that could help them stay competitive.