The money it makes will be primarily due to it being the only Disney ship regularly sailing short cruises to
Castaway Cay, and now the only ship that EVER does so from PC, and not due to its design. People won't have a choice if they want to pair a short cruise with a WDW vacation- they'll have to sail the Wish because nothing else is available with
DCL's new ship schedule.
I really don't like the Wish design, but even I've booked it because I really, really want to do a 3-night to Castaway Cay this winter, and the Wish is the now the only ship that offers that. If any others of the Fab Four were available, I'd sail them, but they're not.
I booked the Wish for its itinerary, not its design, and most families likely will, as well. As much as some veteran cruisers on these boards long for more sophisticated itineraries, DCL's bread and butter are still the cruises to Castaway Cay, and especially the ones sailing out of Port Canaveral that can be combined with a trip to Disney World. With DCL's current schedule, that's going to force a lot of people such as myself onto the Wish by default, not by ship preference.