First, thank you ljmiii for your efforts to organize this. I haven't looked closely enough at the legal basis of these claims, committed enough mental energy to read through the Riviera POS, or shared with my own legal counsel the contents of the disparities to know whether or not there we have reasonable grievances on the matter, but I did want to encourage you to explore this further if you feel the case exists.
I think there are a lot of steps that should precede getting lawyers involved (read: $$$$). Having a conversation with
DVC may be one. That would not only help inform you on their position on the matter first hand (as opposed to relying on what others have posted here). This would also provide the members here who tend to take these sort of things more seriously a foundation upon which to get more involved.
I credit zavandor and crvetter as being two very vocal, proactive forces speaking to Disney prior to any legal movement around the reallocation. Their early efforts helped others to say something as well. zavandor in particular, put a lot of effort into the matter (including pushing against a lot of headwind even here on the boards), and his work gave a lot of people the confidence to speak up as well.
While it would be easy for me to post "Yeah, go for it! I'm in!", a lot of people did exactly that on the other thread and never even bothered to call to express to Disney their concerns on the topic. I'll be honest, right now I'm having difficulty seeing how Disney doesn't have a right to do whatever the hell it wants with the new resorts. What's the endgame? That Disney roll back resale restrictions as whole? That Disney backpedal and exclude Riviera from the the club? That Disney create a second, isolated timeshare system starting with Riviera and Reflections? I'm honestly wondering what you see as an end goal.
Do keep us updated on your findings, and thanks again for putting in this effort.