Mine would be arbitrarily slowing down a character to maintain horror in a game. I get if there are reasons like age, injury, or location that could provide context, but don’t turn my legs into molasses because you need to time the jump scare just right.
rpg style leveling/experience
This one interests me. Like level grinding or not having character growth at all?
no experience points or at least make it not required to grind at all. xp really just adds tedium and isn’t interesting like equipment based growth