Yeah I would be interested in this, in fact I thought about the same thing some months ago. But I would really go bad shit crazy with a lot of stupid things to choose from! And you should definitely be able to toggle everything on and off!

Also every piece should have a super move that can only be done in specific situations. We got il vaticano for bishop, casteling for the king or promotion for pawn, siberian swipe for rook, so that leaves queen and knight(i wouldnt count the boost cause it's technically from a pawn) already thought of some things.

On idea i had for the knight is, that when he could take three pieces at the same time he can move again after taking one, i'm calling that fork boost.

For the queen, i think every queen should be able to move like a knight once per game, further cementing her role as the ultimate piece in finally being able to move like every other piece

I also had another idea for the rook, cause with the siberian swipe the problem is everyone gonna have to play it turn 1, called merge, when your two rooks are directly next to each other you can merge them so they become one piece, every time one rook moves the other moves in the same way, if the other rook isn't abel to move in the same way(f.e. if a piece is in the way) you can't play the move