How to Fix Remember Me Perk
Revert the nerfs. Add the condition that if the Killer closes the hatch then Remember Me perk disables.
This would keep the perk at the same strength as it was before, but it would also be an indirect buff to Dull Key/Skeleton Key.
If all the survivors don't escape via the Dull Key/Skeleton Key-opened hatch, then the remaining survivor(s) in the match don't have to deal with Remember Me's effect.
It's a win/win.