Thank you!! We would've done more rooms if we had the time!
So first off, hhhhhhhhhh I forgot I wanted to add a trail behind the player like you're describing, totally forgot lol. And when you say "a visual indicator of when you can start swinging", do you mean an indicator of when you're within the grapple radius?
The jump and grapple already have input buffering btw, although not a long one