Hoping for scraps of info that would hint of an expanded cast for Whatever It Might Be, but seems everything that has popped up (so far) from pictures to posts has only mentioned PT, BB, CC, PJ, and BM.
I can't find the tweet, but when someone asked JMS that when he said all the original surviving cast would be in it, whether that meant ALL the surviving cast, he very emphatically said it meant everybody, which I took to mean Andrea Thompson, Jason Carter, Julie Caitlin Brown, Tracy Scoggins, Walter Koenig etc.
Maybe not Robert Rusler.
If it is fiction, and not some kind of documentary, I can see it being the Telepath War. The surviving cast fits that storyline best. Maybe we'll get Lyta vs Talia!