I've noticed that when clicking on another player's name to see their performance, their graphs aren't shown. I feel this could be a good way to teach players as you could see where they messed up. Thanks!
I dont agree with your reasoning at all since seeing the graph wouldn't tell you exactly what they messed up on. You should just ask them. And besides, this isn't really a game where you can teach someone how to get through a certain section of a map
But, no matter what I think of your reasoning, I think the graph should be visible. Although it doesnt really matter
I've always loved Osu! for its consistency. I agree that there isn't much of a purpose for this but at the same time it's a bit weird (For me at leased) to have the graph display when watching others replays but not in multiplayer.