Maybe some kind of Marvel character dinner as they can't offer this in the parks anyway due to the Universal rights issues. Something very much a boys/teenagers dinner such as it being themed to SHIELD headquarters or similar or done as a dinner party hosted by Tony Stark. And given you won't need park admission then they can bump the meal price up slightly.
They do need more character dinners aimed at boys as there are already too many opportunities to meet princesses. Given the original
Disneyland lands were very boy orientated (cowboys, space exploration, jungle cruises) the current experiances can be too princessy.