Most experts (both on the left and right) are saying Delta Plus is the last major variant mutation and as long as most countries can vax up to 70 percent of their population, the end of 2022 will likely be "the end of the pandemic for real this time"
If presuming President Biden's vax or test OSHA rule makes it through court, Disney could very well drop restrictions in spring 2022 for the foreseeable future unless some new variant happens (which it probably will so don't feel too optimistic)
Phase 3 in Orange County will be interesting. ALL MANDATES will be gone. Universal will of course jump on the bandwagon ASAP but I think Disney will also jump on it too judging how fast the attractions relaxed restrictions after phase 2