So you know in racing games there is a ghost car, I would like to see something similar with osu! scores. Multiplayer games already do this, and since you can the top 50 replays and you already own your own replays, there should be a way to do this.

Personally, I don't think many people want to see additional things while playing..

i would love this but for my OWN scores

I think it would be too distracting to play with ghost. Besides, what about taiko & mania? They can't have ghosts.