I honestly wonder if Al, Dave, Ryo, and Ted have talked about that possibility before, especially after the two Snow performances. It would be a huge shot in the arm for the band's career, especially for fans who weren't very keen on the Ted-era albums as they went on.
An album with Ted, Nick, and Neal would be a wet dream, especially if the music is as good as "Falling For Forever", but that is honestly up to Neal. Considering his music has outputs in his solo stuff, the Neal Morse Band, Flying Colors, and Transatlantic, I'm not sure he feels the need to revisit SB for new original material.
Al did use some of his writing with X's "The Emperor's Clothes" and BNADS' "Afterthoughts" and "Waiting For Me", so it's not like Neal's touch has been entirely absent from SB in the last decade.
It also depends on Nick's schedule, and if things are looking like BBT might still do shows this year, I'm sure he'll be busy preparing for those.
And of course, Ted and Dave are busy with PSA's 3rd album, and once touring becomes a viable option again, I'm sure they will want to tour, especially with 3 albums of material to tour on.
With all that in mind, I don't see *any* activity happening in the SB camp in 2021, but I'd love to be proven wrong.
-Marc.