I feel like OP's question was really more about what we would WANT to change about cruising that what will likely happen with Covid-19. I guess my big wants would be:
(1)
Bigger pools. Obviously. Maybe a lazy river going around the pool deck--how fun would that be??
Absolutely!!
(2) Fewer shops. I pretty much always have to avoid the midship elevators on the pool deck so my kids aren't dragging me into look at pirate toys and mickey goggles. The tiffany store on the fantasy is so weird and un-Disneyish--never understood why it was there. And who really wants buy a $10,000 crystal mickey statuette?
I think they need better stock in the current stores. And yes, Tiffany was a very weird add!
(3)
Port excursions that are actually run by Disney. We would for sure pay a premium for a single
ABD-style excursions where there is a really to-notch tour guide that makes it fun for the kids (I know they do the packages in Alaska that add excursions at every port, but that all-day/every-day adventure touring style is too much for us with little kids--a single excursion like that would be perfect though). We kind of swore off the third-party guided excursions you can book through
DCL after a really bad experience in Cozumel, but would feel better if knew it was a Disney CM/ABD-style guide running things.
I don't like this at all. I would rather support local companies. We normally book everything independently - no reason to give any more money to Disney.
(4) Kid-friendly upcharge restaurant. I love the MDRs, but REALLY love Palo and would love it if there were an opportunity to bring kids in with us to a similar experience but not adult only, since ours don't always want to be in the kids club. One think we always liked about Disney World was having an opportunity to eat a fancy meal at a signature restaurant that is kid-friendly.
First, I'd like them to have MORE upcharge restaurants and yes, be able to bring my daughter. We loved being able to go to all the restaurants together on Royal.
(5) Inside staterooms for 5. Would make it much more affordable to do some of the pricier itineraries.