Hey!

Thieves in general are very underpowered and usually the points are such that taking things like isolate or dual backstab are just not good options. Aside from cheap shot and possibly knife, I doubt many people take a lot of those skills. And certainly no one takes something like a climb. I don't think it would break anything if all thieves just got those skills without points. It would certainly add some tricks to their arsenal and make them more sneaky. And with the exception of cheap shot, none of them are game changers. Even cheap shot is not that awesome against competent people. If you want, make it and maybe knife, blackjack and weapon trip still cost points. But I would argue nothing will break if all thieves just gained all those skills for no points.