I, too, suspect that much of the Last Call inventory was diverted to Extra Vacations at double-plus the price - though the two inventories were frequently the same in the past.
It feels to me like they're converting Last Call into something similar to that useless little Weekly Specials (or whatever it was called) that they had before they began the Last Call program. It had just a very small sampling of resorts from two or three areas (often Branson, for some reason).
RCI must need an additional revenue stream right now. They're charging for Last Call/Extra Vacation Guest Certificates, they're raising the price on non-web-confirmed Last Call bookings, and they're trying to make us pay double or more what we've been paying for Last Call stays by putting them in the Extra Vacations category (and they've even raised what would have been the old EV price on them there!). I, for one, hope it backfires on them. I know that my family won't be booking any further Extra Vacation stays when I know that same inventory should be in Last Call - especially at this time of year. I truly hope those weeks go unused and they have to eat them.