Personally, I'm managing my own expectations to assume that we won't really know how they're intending to proceed until May or June, based on the previous 'go/no-go' period for 2020's con. 2021 may not strictly follow that, of course, but as a baseline, it's a start. Another month of vaccines going into arms (in the US and around the world) will help, and while a lot can change in 4 months, hopefully the trend from now to then will be in a much better direction.
Subject to change, no guarantees, etc, etc, I get that, but this is something that's both rapidly changing and also very slow on some levels. Millions of shots into arms is good in an immediate sense, but also takes weeks to really build to full efficacy.
Obviously we'll all just have to be patient and respect that the crew here have the community's best interests at heart. They want to share everything that makes Gencon awesome, and nobody wants to be at the heart of what could be 'one of the last superspreader events', so we'll just have to sit tight and see what happens.
At least, that's what I keep telling myself.