All of this speculation is very interesting. I've also pondered what would entice me to join a pure points program. I have wyndam as well, and it's extremely flexible, so a similar points system would be enticing. I WOULD be interested if some of the items someone listed above were included-mostly, the ability to combine points, to stay at new resorts (or different ILG resorts), the ability to book less than or more than a week, and/or have a different start day.
How much would I pay for this? Honestly, not much. Less than $1,500-and I'd really have to think about it with that price. And I'd REFUSE if I had to give up my deeded week to participate. And it's only a silver week!!! Like others, I don't know what you could do to have someone give over a premium deeded week. I've been thinking of the possible changes, and ultimately, I picked this week as it works with both school & work schedules. I had to wait over 3 years to find one I wanted at a price I was willing to pay. To give up that certainty for some uncertain week-and to pay for that uncertainty? Nope. Do I think that Hyatt would even offer such benefits for such a low price? Nope.
If the points program is just the best thing since sliced bread...then I will probably be able to buy those points on the resale market in a few years--this was what happened with Wyndham--it was cheaper to buy points than to take your deeded week & convert to points. Right now I've got more timeshare than vacation time anyway. And if I do need to trade, and it's no longer favorable to trade in the Hyatt system because of dwindling choices? I'll still have the option to use II or RCI or whatever independent exchange system. So ultimately, I don't think the pure points system will matter much to me.
For everyone who mainly bought their Hyatt unit to trade, they might think differently.