We went to the RV Supershow in Tampa yesterday and all the 5th wheels we looked at had the island in the kitchen. We think that takes up too much floor space.
You can't have it all. Can't have enough floorspace for a squaredance & have a workable galley that has a decent amount of counter space. Lots of them don't have enough room for a bag of chips & a bowl to dump them in.
The DW is a certifiable foodie, coming from a restaurant family. One of the main buying points of our Alpenlite 34RLR was its huge counter area. More even than an island style.