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.
Random battles should be banned. Play any Pokemon game back to back with Let's Go Eevee/Pikachu, the ability to dodge random fights or selectively choose to engage something that you want to catch is so fucking nice, even if the rest of the game is exactly the same. Something the PC rerelases of Final Fantasy games have all added is a few cheats, the best of which by far is "no encounters" which still makes you fight the bosses but lets you just explore to your heart's content. I've been getting into speedrunning Deltarune lately, and successfully dodging each of the encounters without dropping your sprint speed by bumping into a wall is like 90% of the run.
It's just so much better than the older way of doing it that there's no comparison.
I like they way it works in Earthbound where monsters spawn randomly, but you can see them and either avoid them or try to hit them from behind for an opening move.
It was really cool to automatically win if you were sufficiently leveled.