I mean, it's like saying that no one should own/book BCV because they can get great rates at Swan/Dolphin and walk over.
These are going to be two distinct resorts. CBR will already be on the gondola. The rooms at Riviera, presumably, are going to be higher-end, and also be villas ranging from studios (roughly equivalent to capacity at most of CBR), 1BRs (again, capacity equivalent, but more spacious with kitchen) and then the units that sleep greater quantities of people (2BRs, probable GVs). I doubt they'll make the point rates in the range of VGF, but I think this will sell well unless they really screw up something about the rooms.
Gondola to DHS and Epcot is not particularly different than the proximity factors for VGF and Poly to MK and Epcot.
Pop and AOA will also be on gondola, and aren't going to magically become deluxe. The rooms simply aren't designed to be, the buildings aren't designed as such, the pool bars aren't deluxe, the food service isn't deluxe. If they do Riviera right, it will be a destination for the dining. CBR guests will just be closer in to access it, much as Fort Wilderness guests don't necessarily have to struggle to get to the Lodge or Contemporary (save the hike to transport, which is equivalent to getting from the Pirate Rooms at CBR).