DVC has had a habit of following in the footsteps of other timeshare developers. And there are two for which resale points are restricted. They have different models.
Marriott requires that every third-party purchaser pay an "education fee" per point---this amounts to about 20% of the retail sales price, and is effectively tacked on to any resale purchase. There is no avoiding this fee, but once you pay it the points are treated as though they were developer. They also actively ROFR below a pretty well-known floor that is also about 25% of the retail price, and have never wavered from that.
Diamond (now part of Hilton) points bought from the developer are good through the entire system. Points bought resale are only good on the underlying "collection" or individual resort from which the points were drawn. It is possible to wash resale points, but doing so generally requires a developer purchase at a 1-to-1 ratio. So if you want to bring in 3,000 points, you have to buy another 3,000. I suspect you can sometimes negotiate that, but do not know for sure.
Personally, I do not see Disney following Marriott's model. I suspect it leaves too much money on the table. Diamond's model is more likely, but even then I am not certain.
There is another model that lots of developers use. Suppose you own at Resort X, and sales convinces you that you instead want to own at Resort Y. Equivalently: you own deeded and they sell you on the idea of the trust, or vice versa. In that case, you surrender your current ownership, buy (usually) more total points, and get a partial credit for what you currently own. Such "equity trades" are often smoke-and-mirrors, because you aren't really getting the purchase at a better price than you could have negotiated for paying cash, but c'est la vie.
It is also possible that DVC doesn't do any of these things, and tells resale purchasers to kick rocks. DVC, more than any other timeshare, emphasizes the "sense of belonging" that ownership brings. They have leaned hard into that sense of belonging only being possible by buying retail points. Allowing "belonging" in any other way would be a significant departure.
So, my money says that no such program is on the near-term horizon---say, not within the next five years, at least.