maybe
Custom boards?

Then what about a competition where only one can get in?
Overall the original idea would never work or be worth the effort. But do you mean have a competition for designing a new custom board to be released in the future? That would be cool sometime

For a while I've wanted the option to customize the board, though I'm not sure how well the custom pieces would work with regard to the animations.
I think that Chess is an art form, and I will say that custom boards and chess pieces are gonna be good. Here's some suggestions.
- Upload a PNG that will be the squares (separate from black and white), and one bottom right square, like the Staunton Board.
- Upload a PNG for the pieces, all 12 of them.