I just got off the treasure today, so while fresh in my mind.
1)
Castaway Club by days and not bookings.
2) Buffet in the "sports" bar like they used to have (nothing on Periscope Pub - you can order food here but it costs);
3) Pastries brought back to Cove Cafe and coffee areas (none on the Treasure) - who doesn't want a treat with their coffee?
4) Give the adult areas more consideration -the people paying for the cruise!
5) Why are the lounges so small now on the newer ships? Skipper Society on the Treasure felt to me like it is in a mall because it is open on two sides and the jewelry shop is right there with people just walking by.
6) More dining options for adults who don't want to always go to the main dining rooms. How about leaving the buffet open and making it a sit-down? I remember when you could go to the "buffet venue" and have dinner - no particular time - just show up while they were open and that was fine.
7) I wish this new ship class had more fluidity. I miss deck 4 as a walking/running track.
8) On the Wish class, can we fix the elevators? Beyond the fact that there are only two sets on each end, if you want to go to decks 12-14, most of the time you had to wait for the right elevators because there were only a few that went to those floors, and they were on the same "circuit" as the rest, so you aren't able to call just those specific elevators. Yes, you can walk - but just saying.
9) Menu changes for all venues.