Hmm, I'm not really a fan of games that do that. XCOM2 already does that where it's a constant balancing act between rushing in to accomplish tactical objectives before time runs out, but not so much so that you plunge too quickly into enemy territory and get blasted to bits because of it. I usually play games on "normal" or "medium" difficulty, but with that one, I had to clock that back to the easiest difficulty setting because I was just getting my butt blown up and wasn't even enjoying the game anymore.

I'd rather have a game be too easy than be too hard. If a game is too easy, heck, I can even restrict myself to using only certain weapons/abilities to impose my own kind of challenge. But if struggling for hours and trying my ultimate best still results in getting losses over stuff I have no control over, it makes me wonder if there's any point to playing.