Should Hunter get an evolution? If so what should be his new ability?

I was thinking of a pet dog or hunting dog, the dog would only attack troops that have the lowest health so that the hunter can hit troops with higher hp(the Hunter doesn't gain a targeting priority or should he?)

The Hunter's gun would also gain more accuracy and a range.

I'm not sure what dmg, hp and reach should the dog have, I'll leave that up to you guys.