What could potentially happen over time is that some exchanges will be harder to get in Vistana. That can happen if owners at certain resorts (especially mandatory ones where 100% of owners are in Abound like WKORV/N and WSJ Phase 1) overwhelmingly prefer to trade their timeshares via Abound rather than VSN. I don't think it will happen and definitely not overnight, and new resales (not automatically in Abound) will actually reverse this trend somewhat. Personally, I think plenty of owners will be hesitant with Abound, and the deadline to elect points several months before the use year starts, something foreign to Vistana, will be new and inconvenient to many Vistana owners at first. To the extent it's harder to trade in VSN, resale values may be impacted over time.
As others points out, WKV Plat has a pretty good MF/CP ratio ($0.46). Some, including myself, feel it was short changed because it has Staroptions like Maui and rents out almost like Maui, but got 35% less Club Points. The 2BR also got substianlly less CPs than the combination of the two 1-BR units it is comprised off, which is also "unfair" in the Vistana world. I believe the combination of the two 1BR units is about 4700 points vs. 4050 for the 2BR lockoff, which is a large difference given the developer was selling the combination of the 2 smaller units for the same price as the lockoff.
That said, 4050 points can get you some good and "fair" exchanges outside of Hawaii. As an example, Marriott Frenchman's Cove on St. Thomas prices a 2BR at 4125 during most of their Platinum (winter/spring) season and 2975 during most of the summer. Without investigating rental values and such, to me that's a fair exchange. If I go in the winter/spring I just need 75 extra points and if I go in the summer, I can get 10 nights. in a 2BR. For things like 75 extra points, you can always attend a presentation and opt for the CP offer (usually ~400 points) instead of cash or Bonvoy points.