For me, they're two different games. Mario Kart World has new gameplay, so it can coexist with 8DX. In fact, I think they could continue releasing retro tracks for 8DX and turn it into the definitive classic Mario Kart, but with a more...
I agree with those above. If you don't know what you're doing and create code that you don't know what it does, do not release that or pretend it's safe.
If you do not have the time or opportunity to do a big community project, do not do a big...