Thanks!
The initial concept looked much more like Alchemy: with brushes for the four elements, light, dark, magic, etc. The scope was enormous frankly, so I leaned heavily into the limitation of locked in: paint once and watch your world grow.
I plan on expanding the effects of time on tiles, adding rare spawns that the player has to spot and random events. Also, a visual overhaul for which I had no time. Do you think that with that added interactivity having more spots to paint on would still be necessary?