Several things need to happen before I'll go to Disney World again.
1) I and all of my family need to be vaccinated.
2) Vaccination levels of the general population need to be high enough to make up for any shortfalls in the vaccine's efficacy.
3) The case numbers in the Orlando area need to be low enough so that I can travel there and back without a mandatory quarantine upon my return.
4) Operations have returned to a level of normalcy to justify the time, effort and cost to visit again.
Right now, I don't realistically see all four conditions being met until 2022 at the earliest. We might hit #1-3 sometime in 2021, but until Disney starts seeing a steady flow of guests again, they won't have the cash flows needed to operate at something approaching their former normal.