I think a new excursion in the form of a escape room would be great. There could be 3 themed rooms or something like that and all the puzzles and solutions would be randomized (with hopefully no way to guess or learn from past experiences) Payouts could come from communicating with your 4 player team and getting solutions. Also a base payout for losing or winning the escape room. Length would ideally be 1 hour but nobody would stay for that long + there would be a bigger queue for others so 15-30 minutes could be best. It could also be a minigame on the ship.