Wow... it has been a lot of time... I even make a duplicate :, U.
I see a lot are mentioning like a bot, or somthing like that, but i guess it would be enough to just have the score in realtime in some cases.
Also i have an idea of extra thingies :V... you know, just to say sth.
MOD: It would be nice to have a mod that gives you a game over when you have X difference below with a replay.
MULTI-REPLAYS: In multiplayer you just don't compete with one person (most of the times), so having lots of replays could also be cool (There may be some lag though)
Personally i think that just the "score bot" is somehow easy to implement, but the ghost (like a second player besides in mania, taiko, and like transparent in standard and CTB) would be a little harder, and with a lot more cpu usage but that's just my opinion *<*. BUt even though some people just need the numbers, it would be very cool to have a bot beside you