Turns out I'm bad at Tetris in two games at once now.
Game fits the theme well with choosing which side to send pieces to. Game has extra chaos in having to move between the games and the conveyor, had some struggles figuring out how to consistently use the control scheme.
Only thing I can think of to suggest would be starting the conveyor slower and gradually increasing the speed (to be fair, I didn't last long enough to know if maybe it DOES increase or not), that way players have more time to adjust to the set up. Was able to clear a row on one side though, happy to see that worked as expected.