Drew, I love your kart! It looks almost exactly like the real racers!
Well, my 4 day weekend is over, and I'm going to get back to development here. Unfortunately, work is getting heated up and I need to get to some IRL housekeeping too, so my time is going to be a little split up for a bit. So I put together a poll of my different goals in the program so you can decide what my priorities should be:
http://www.strawpoll.me/10679644
I'll be working on all these in some aspect, but I'll push hardest on the one you guys suggest. I have a feeling I already know what the answer will be though, lol.
EDIT: RobiNERD brought this up to me, only the US MK64 rom works currently. The next release I'll be looking at the other ROM versions to see how easy or hard it will be to use those.