My main problem is that I generally play Osu while waiting in queue for league, and when queue pops for league, it rips the cursor way off to the left side of the screen, and then just keeps going. Same thing with twitch streams if the person you're watching starts hosting someone else. If any other application takes focus away from Osu! for any reason, you simply lose the match. A feature to automatically pause when focus is lost is pretty key and pretty simple, imo. I can probably make a script to do it with AHK in like 4 lines. And probably will now that I think about it.