I think if the powers come back, it will be a case of either A) considerable pain and effort on Sam's end when he uses them, as well as the whole "temptation to the Dark Side" stuff, or B) he can't control them at all and ends up blowing up stuff more than helping.

I want them back, at least to see what exactly he can do. But yes, it being a quick way to fix any situation would be boring.