Target Finder is fine in some cases. My problem with it is that it identifies a target at any range simply by detecting a single hair on top of their head. It also sees through brush and smoke (sometimes). It takes recoil away from guns by at least 60-80% and turns all weapons including SMGs into full-auto snipers
The reason I don't like it is because people will sit in a far corner positioned in a way that they can see an objective while remaining completely hidden (I mean 100%) and just wait for the red box to pop up. They won't see their target and have no idea anyone is there, without it they wouldn't have a clue, but they still can get cheap kills because of how it works
Solution, target must have 50% visibility and it's range is only X feet. That way people can't sit and headglitch getting easy kills