Anything is possible for the 2042 resorts when the time comes. Anything. As to what is likely? I don't know; I rely on
this source instead.
In the big picture, I'm a "strict constructionist" when it comes to buying timeshares. I assume that I will never be promised anything new, and that anything that is not guaranteed will be taken away. So, I don't care about perks. I assume that new resorts will be not accessible and expiring resorts will not continue. If, after all of that, the purchase still makes sense then I am happy to buy.
This seems like a very pessimistic attitude, and it probably is. But, it also positions me to weather whatever the developer throws at me without disappointment. For example, other developers have created club-within-the-club products that require new purchases to be a part of. Disney has never done this. Will they ever? Your guess is as good as mine, but they
could. There is nothing that prevents them from doing it, and if the Mouse thinks it makes business sense, he'll do it faster than you can say "cheese." If that ever does happen, there will be rooms and maybe even resorts that someone who buys from the developer right now, today, will not have access to. We all have opinions about whether or not it
would happen, but unless some of us are closet DVC executives, we don't know. And, even if those folks today say "we would never do that," never is a
long time.
But, even if they did, so what? If you are happy with the resort portfolio as it stands today, and would be happy with it even if resorts retire on expiration, then buy with the full confidence that you'll enjoy your purchase. From there, you can only be pleasantly surprised. Buying RIV resale? If you really like RIV and can imagine being happy with it, go for it! You'll be as happy as you decide to be. Of course, the Mouse (and capitalism generally) will tell you that you can't be happy with what you have, that you need a
little more to be happy. You can remind yourself that the Mouse just wants your money, and you like things just as they are. If you can do that, you'll be happy.
The same is true of the O14 resale buyer, or even the developer purchaser who encounters the hypothetical "new club" that they aren't (yet) a part of. The trick to remember is that you were happy with your purchase decision when you made it, with exactly the resorts that were offered. The only person who can change that attitude is you.
Where it gets a little trickier is the volatile perks. That requires some cold-eyed assessment, recognizing that any of them could go away tomorrow, and thinking about whether that would matter to you. Will you be happy if they disappeared tomorrow? If so, great! That way, if it happens, you can mourn their passing, but you can remind yourself that the base product still justifies the purchase. If you instead decide that the perk (AP discounts, valet parking, TotW access, etc.) is necessary for you to be happy about the purchase, don't buy.
I'll admit, this isn't easy to do. The Guides are there to help you dream about what might be possible, and how Membership will meet your every current and future whim. That's their job. And most of us
want to do that because we want this purchase to work, to make us happy. It won't make us happy. It will only let us book some timeshare rooms, on a space available basis. The happiness part is up to us.