I think it would take a spectacularly low price for any bump to manifest in the short term. Given the uncertainty surrounding Disney's hotel operations and theme park admission, most people have to be second guessing a long term commitment to Disney at this time. Even people who had DVC tours planned during April or May trips must be questioning whether or not to move forward. In lieu of some compelling reason to buy now, it's better to take a wait-and-see approach. We know they won't be selling out of Riviera points anytime soon.
Even with a Covid vaccine, I don't see things immediately leaping back to 2019 sales levels. I mean, it literally took 10 years post-recession for sales to climb to those highs. It could take another 10 years to get back there.