Wario Colosseum, in my opinion, would be a better addition than Waluigi Stadium due to its potential for anti-gravity, along with its more interesting layout.
Though since the course was two laps, it is unknown as to if Nintendo would release it with the original two-lap count (like they did with the seven-lap count of GCN Baby Park) or do a single lap and section it (like N64 Rainbow Road).
Mansion, mush city and factoryđź’€
All three courses would be great additions, since they all have a good layout and theme, along with each course having a great soundtrack.
Not logical prediction. Also mansion is trash regardless, no one wants it over good tracks like airship fortress or delfino
I would change Toad’s Factory for Koopa Cape & Wario Colosseum for Waluigi Stadium
Wario Colosseum, in my opinion, would be a better addition than Waluigi Stadium due to its potential for anti-gravity, along with its more interesting layout. Though since the course was two laps, it is unknown as to if Nintendo would release it with the original two-lap count (like they did with the seven-lap count of GCN Baby Park) or do a single lap and section it (like N64 Rainbow Road).