I'm gonna try something new

I am going to be trying something new, remember, JUST TRYING so it may not go well (me or others not liking it). Anyway, I will be trying a custom track multicup in quick mode where each cup represents a level of difficulty. It will also probably not be mario themed and will go something like this:

Preview cup (a preview for the other cups)
Basic cup (levels 1-4),
Medium cup (levels 5-8,
Advanced cup (levels 9-12),
Difficult cup (levels 13-16),
Maybe more in the future depending on how this goes.

Each track will also have a challenge that goes with it, kind of like a bunch of seperate levels. (The preview cup wont have dedicated challenges or levels.

Here are the currently planned levels:
Level 1-basic oval race
Level 2-basic square race
Level 3-basic triangle race
Level 4-basic figure-8
Level 5-medium circuit
Level 6-medium obstacle race
Level 7-medium rainy race
Level 8-medium circuit 2
Level 9-?
Level 10-?
Level 11-?
Level 12-?
Level 13-?
Level 14-?
Level 15-?
Level 16-?

Let me know what you think about this or any suggestions you may have.