I though I'd try to research what percentage of DVC owners bought direct vs resale. It wasn't easy but I found this one thread where a posted did an estimate of the percentage of original owners based on deed transfer data:
https://www.disboards.com/threads/what-is-average-lenght-of-dvc-ownership.3197790/
The bottom line was an estimate that OKW likely had 88% original owners as of 2013, SSR was at 94%, and AKV at 97%. These numbers were surprisingly high to me (and to everyone on the thread). Note that the estimate defines original as either the original owner or a gratuitous transfer (gift or inheritance) from the original owner. This makes sense because they would remain full members, right?
OKW had 12% of contracts as resale 21 years after opening
SSR had 6% of contracts as resale 9 years after opening
AKV had 3% of contracts as resale 5 years after opening
This points to a gross estimate of 0.5% of original owners selling their DVC contract each year. So I'm not sure whether there will be any impact from fewer Riviera owners buying direct and not intending to sell. I suspect that selling is much more of an unanticipated "need to sell" or "don't want to go anymore" kind of motivation.
Another way of over-analyzing the price data is to look at differences in pricing behavior between resorts. Beach Club, Grand Floridian, BLT, and CCV resale are likely not impacted by the resale policy changes. People are paying high resale prices for those resorts because they want to book at the 11-month window for those resorts. So you'd have to look at resale prices at SSR, OKW, BRV, or possibly AKV to see any price changes that might be due to people not buying resale at those resorts due to the fact that they can't book any future resort like Riviera or Reflections, and even then those changes would have to
not be evident in the data for BCV, VGF, BLT, and CCV. I don't see that in the February data but I think we'll know more looking at March data.