IMO you should definitely RESCIND immediately. I'll give you 3 common reasons...
- Diamond has some decent resorts and their resort operations side isn't bad. However I think you might find that the maintenance fees of Diamond are much higher than they should be relative to their property portfolio and what seems like the general 3 star condition reported at more than merely just a few of their property offerings. As others have stated the problem with owning Diamond points is that you will pay Marriott level prices but only receive Wyndham quality. So if you want to buy and own points directly from a Developer purchase why not buy Marriott points and at least get access to higher quality properties for your equivalent maintenance fees? Or go buy Wyndham points and pay less for properties that are as good or in some cases better than many Diamond properties?
- If you still feel compelled to own Diamond points, then still rescind and go get 7,500 points on the resale market. Diamond points are practically worthless and you can find unlimited amounts of them on the resale market for FREE. Diamond points might actually make sense if you love to visit some specific areas repeatedly...Sedona, Arizona where they operate some nice properties, Hawaii where they have some properties popular with owners, Cabo Azul in Mexico is an outstanding property and possibly their only true 5 star resort, and they have multiple choices in Williamsburg, Las Vegas, Orlando, etc.
- I am pretty sure you aren't allowed to rent your points. There are Diamond owners who have reported they have had their accounts frozen because they tried renting points they couldn't use and didn't know they were violating Club rules.