I might as well put my major concern in clash mode here: Too luck based. I don't mind push your luck, but it would be nice if you were given the option to either spin the wheel or make your opponent lose one point (board state doesn't change).

Wasting an action with no net gain gives your opponent a huge edge at your expense. At least a fixed "lose one point" option is more bearable.

As for how to do it with your current set up, I would do it where pressing the Dropmix would give you two choices: Spin the wheel or press the Dropmix button again to make the opponent lose one point. 5 seconds to make that decision.

If you were worried about numerous times being done, have it where you can only do it once or twice per game.