Button for “close last portal after u walk through it”. This is a bit niche but on top of close left/right/both, there should be a key bind that u press b4 you go into a portal so the portal closes after you go through it. Quality of Life thing because it’s very frustrating when u try to go through a portal and close it behind you but u where a pixel off and you don’t walk through the portal—>close the portal—>are left walking towards the portal wall, probably spamming the portal button again to reopen the portal.. I hope I explain this well enough and I could see this as a skill expression thing but sometimes you clip the edge of the portal and I think it would impossible the game.