This is not directly DVC related so anyone who doesn't have interest in how other timeshares have evolved may want to stop now.
How and why I got there might be interesting to you. We owned fixed weeks in Aruba for a number of years. We had never gone to Aruba and bought them to trade. At the time dues were low, units were cheap, I had a friend who owned there and was happy (she still does) and they traded fairly well. A few years into our ownership, Bluegreen bought out the unsold inventory and began selling the fixed weeks. It took them another 2-3 years to start offering their points system there, I know there were some roadblocks to them doing so but I don't know the specifics.
At the time, all they had was Silver and Gold VIP levesl(20K & 35K) but there were significant rumors of a Platinum and Bronze with the Platinum likely to come in at either 60K (best rumor) or 65K points. To complicate things further, I actually bought and sold a few weeks over the years because I could get them so cheap and make a reasonable profit. By doing this (and later converting to BG points) I actually missed 3 special Assessments (by luck, not planning). I actually bought a couple of extra weeks just to add to the group as part of the conversion in case the level ended up being 70K for platinum. Then I simply bought 3000 points retail and was able to convert ALL my fixed weeks to points. Total cost relatively low compared to what I got and they all count as developer points. One could buy cheaper right now but they would be non qualified points. At the present time, one has to buy from BG (they also have their own resale arm) and pay at least $1.25 a point to have them count as qualified points. The benefits of being at Platinum are fairly significant and include free cancelations, 3 free off season weeks a year (can also trade them), free access to their travelers plus program (similar to DVC's exchange for CC,
DCL, etc) and most importantly, the ability to wait list 4 months ahead of a non VIP members (1 mo ahead for bronze, 2 for Silver and so on).
In doing this I had to give up the actual weeks and units I had which I preferred not to do mostly because I had a 4th of July 3 BR double lockoff unit. They did have a program for a while that would have cost me even less (about $1250 total) and allowed me to keep my weeks. I tried (and was promised by the VP in charge of internet sales) that I could use this program but he drug his feet for 6 months and then I was not able to go that route in the end. I might have been able to complain and get it done but decided to proceed with the above mentioned purchase (about $3K more) rather than chancing it and boy am I glad I did. Within a year or less after I converted, they announced a major SA to the tune of $1000 for each studio and 1 BR ($2K for a 2 BR). I would have owed around $8K in SA plus the regular fees putting the total price at over $10K. Ultimately I got better units and weeks overall than I had owned previously, so it all worked out.
One other component of how BG fees work that makes the economy of scale a positive thing is that they have a base fee and then so much per point above that. It's really a much more fair way to do so because those with less points do cost the system more than those with more points (on a pp basis), on average. They also have a club fee which is the same for everyone. IF DVC were to go this route, think of it like a base of $400 for every member then $3 a point instead of around $5 a point. One who owned 100 points would pay $700 a year and one who owned 1000 points would pay $3400 compared to around $500 & $5000 now. Most members would pay around the same though.
To tie this into DVC, my BG experiences and my Marriott experiences are largely why I do pay attention to rumors. I bought, sold and positioned myself directly related to rumors for BG and taking those chances because of the rumors easily saved me $100K or more to date over buying retail and at least $30K compared to having not converted. Also, at the time of my conversion, the platinum option had not occurred but it did later and I was grandfathered as were all existing members.
Sorry to be so long but you sounded interested.