Hello! First of all, THANK YOU for such kind words! It means a lot to me!
Second, I didn't implement ghost tapping because I didn't use that feature, but it is very possible. But I'm not sure how ghost tapping should behave.
I mean, I can tell the game to just ignore when user accidentally press when they are not supposed to, but I have a feeling that other fancier mods do more than that.
Let me know if there are details or ideas about ghost tapping I have to know!
Also, I think opponent mod will be a fun idea! I'll try to implement it if I can.
I'll let you know once I implement those features!