A major difference is that the Riviera POS did not include a
DVC Resort Agreement that had those new commercial purpose restrictions or that they could be enforced by BVTC. That agreement also never had provisions allowing BVTC to reallocate points among room sizes, e.g., lowering 2BRs while raising studios year round.
All the POS documents for a resort apply only to the given resort, here CFW, except one. The document that can apply to non-CFW owners is the DVC Resort Agreement since other resort members will be using the DVC Reservation Component to make reservations at CFW. Thus, those additions to the CFW DVC Resort Agreement were created so they could potentially be applied to other resort owners. For example, declaring in the CFW DVC Resort Agreement that BVTC can do a reallocation of annual points needed per night based on room size obviously is something designed by DVD to allow BVTC to go after non-CFW owners, because all CFW cabins are the same size and require the same points per night.
Particularly all the pre-Riviera resort owners should be asserting the CFW DVC Resort Agreement is improper, including because your DVC Resort Agreement declares that any Resort Agreement for a new resort added to the system must have terms that are the same in all material respects as your DVC Resort Agreement.