I would take an existing theme and upgrade the amenities!! Think current value resorts meet Disney deluxe resorts
I would love to see a deluxe hotel that is larger than life icons (like Pop, ASMo and AOA) with multiple themed pools with slides, hot tubs and maybe even a beach. Rooms in this hotel would have queen beds and plusher linens, separate bathrooms with two sinks, an option for a balcony. Table service restaurant as well as a CS restaurant maybe on the monorail or at very least boat transportation.
The one thing that keeps me from wanting to go to a mod or deluxe is because our family loves the whole fun theme. We do not think the mods and deluxe scream Disney. I have often wished for a hotel like I mentioned above. It stinks that to get more deluxe amenities you have to loose the over the top kid fun themes!!