Had this idea earlier, basically just All Peach Moons but with Toad moons.They could be captain toad and/or music toad, idrc

so your category will have rules that you don't care about? What a great start

No no. I know exactly what you mean. It would still rely on the paintings for the fastest route, but it would be a completly different movement. For example snow kingdom, where you just go up a hill and get the moon, instead of going into Shiveria.

link to your post? but yeah, i think i have seen this idea before