The ranger's ability of Evasive Fire is something that can be easily abused in the turn-based mode. With 8 bond a Ranger can get off 9 shots in the opening round (1 from their Action point, and 8 from using Evasive Fire).
I think a simple solution to this would be to make the shot gained from using Evasive Fire only occur on the first usage of the ability each round. This way you'll gain the benefit of 1 extra shot and the mobility aspect, but you can't just kill off a bunch of guys by spamming it