I think that stand alone DVC resorts will really have a tough time, including Aulani.
HH does well during the summer but percentage of the villas are booked in the winter? Vero Beach is similar, but with the next hurricane, fans will drop it on the resale market like a hot potato.
I think that a connection to WDW or
Disneyland would make sense. Another DVC resort at DL would strengthen the DVC at that locale. But it needs to be on DL property and that's a problem. It's a shame that the DVC didn't get the entire new wing addition to the Grand Californian it is such a beautiful resort.
There are so many posts here on the DisBoards about how many are interested in a DVC at the Poly or Grand Floridian. There definitely is room next to the GF so that locale makes the most sense.