Maybe adding more track support, and if people want to, add the ability to make their own tracks raceable by adding a finish line and setting how much players and laps players have to drive. Maybe people who don't want to race can spectate?

You could maybe add drifting if you can?

add AI NPC if it's possble

theres a big race map pack with over 100+ race maps i think, it a great map source

https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1233958066

also can u make custom tools for map creators such as starting points

music?

ragdoll drivability

custom carts? like the b-dasher and stuff. if it were all mk8 karts it would be nice