I know you are purposely being a bit facetious here, but I recently ran into a case with some friends of ours (I just found out these details, so I wasn't able to warn them earlier) that resonates with your post. They had purchased into the Diamond system years ago (retail, of course), and had been convinced by salespeople to "upgrade" a few times, resulting in them having more points than they could reasonably use due to their lifestyle.
When we were visiting them a few months ago, they ask me (since they knew we owned HGVC) some questions about the system now that Diamond merged in with HGVC. They said they were at a recent owner's update (aka, sales pitch) and they were commenting that they had too many points. The salesperson actually told them that if they "upgraded their ownership" (which we all know what that means) for mucho $$$, they would then be able to sell off their extra points! HGVC does not have any formal buy back, so this was all lies.
What slimeballs! They heard that someone had too many points, and then made up custom-tailored lies that would only a) give them even more points that they can't use, and b) part them with more of their money. Just crazy.
The good news is that enough red flags went off that they didn't take the bait, and after talking w/ me, I think they have a better understanding what their options are at this point and hopefully won't fall for any more of their sales tricks. But in the end, you can only lead a horse to water...
Kurt