Marriott has a different model. Their points cannot be used until paying an "education fee" that roughly doubles the cost of buying Marriott resale point from another owner. They are still much cheaper than retail (about 60% off).
Marriott also employs the Hilton/Diamond model you refer to, but they do it with resale deeded weeks, not resale Trust points.
DVC may refer to the ownership as "points" but the product is more similar to a Marriott or Westin/Sheraton deeded week, except it's more flexible since it can be booked at any unit size and any length of stay (and it expires).
Marriott started out with deeded weeks and their points system launched around 2010, after they stopped building new resorts following the global financial crisis. Those "points" are based on a real estate trust which has thousands of weeks that were dumped in it over the years, whether it was unsold inventory, or ROFR weeks inventory. Marriott sells the trust as "points" and owners of those points own a sliver of that trust and can book (or exchange into) all the MVC resorts at 12 or 13 months out. As you mentioned, resale buyers who purchase Trust points are required to pay a hefty fee to make those points functional. And that fee has gone up by 200% since 2010, from $1/point to $3/point.
But there are still a lot of deeded weeks out there owned by Marriott owners, not the Trust. Those deeded weeks view the Marriott points system as another exchange option and the weeks that are "enrolled" in that exchange system (mostly those grandfathered pre-2010) can elect a fixed number of points in exchange for their week, which is then made available for points owners to book. Post-2010 resale weeks can trade via Interval but are shut out of that Marriott points exchange system (i.e., resale restrictions). However, owners attending a presentation are sometimes offered the option to have their resale weeks enrolled in the points system if they are willing to buy direct for a relatively large sum.
I suspect that's the route DVC may take as well, but would expect it to start only if resale prices of the restricted resorts are substantially lower than others, and if direct sales take a strong hit as a result of owners opting for a much cheaper albeit restricted resale product.