I did battle with this for a reservation in a few weeks out of SEA.

While I can't say with certainty, when I tried to make the reservation with cash, it showed a wide variety of cars available, all at (relatively) low prices. To *me*, at least, that makes me think there's pretty open availability and they'd be inclined to unload some rentals even at "saver" point rates.

But, as soon as I changed to "use points", nearly every car type became unavailable. When I chose one of the few remaining available cars, and clicked through, it said that points couldn't be used for that reservation. (At all - regardless of rate).

After playing with it for many minutes, I finally found that it would only allow to reserve one car type using points at SEA that day - a "small sedan" (or whatever they're calling it now).

I don't know if this is another example of poor Hertz IT, and an indication of a pending overhaul/devaluation of the points program, but it seems similar to the experience you're having.