I have the POS's for Barony Beach Club and SurfWatch which were given to us when we purchased direct from MVC years ago. They're not handily accessible online though, they're 5.25" X 8.5" paperback books that contain the Master Deed, Time Sharing Plan/Declaration, Management Agreement, By-Laws and various other of the legal components in effect at the time of purchase. Each page in the books is a copy of the original letter- or legal-size page shrunk down to size; Barony's book is 326 pages and SurfWatch's is 376 pages.
For a while it was possible to obtain the POS from MVC (Owner Modifications) for any of the resorts where you owned Weeks, which would be especially helpful for owners who bought on the external market. That may still be true; I just haven't looked into it lately. When it was possible they would caution that you may be charged a copying fee but I don't remember ever hearing of anyone who had actually been charged for it.
The problem with trying to compare and contrast among all the resorts in MVC's portfolio is that each resort has its own POS, and, regardless of the legalese that was in effect at any certain point in a resort's history, virtually all of the resorts' Timesharing Declaration docs give MVW the right to amend the docs as needed (subject to legal restrictions) for various reasons including in order to provide uniformity in the management. For example, back in Nov 2010 after the Destination Club introduction in Jun 2010, there was a portfolio-wide email blast to owners of amendments pertaining to reservation procedures for Weeks. It appeared to consolidate all of the variances that had ever been implemented system-wide but even today, they don't follow all of them to the letter. Also, we don't always know or get a copy of amendments when they change them - that 2010 blast was not at all the norm and looking back now, it may have been done in an effort to stem rampant speculation that the DC could and would negatively affect Weeks inventory in blatant non-compliance with rights stipulated in the Weeks governing docs.
As for the right to exchange direct-purchase Weeks for Bonvoy (formerly Marriott Rewards) Points? That right was written into every resort's POS with the stipulation that it could be amended or revoked at any time by the company (Marriott, Int'l) which oversees the program. The same was written into every Contract for Purchase for the individual Weeks, which is where the amount of MRP's and the frequency with which a particular Week could be exchanged for them was expressly stated.