Those all sound great. I was thinking like a Jammit thing (which idk if I should say this, but I ran into a guy wearing a DT shirt when I was at Chipotle, and it turned out he worked at Jammit. He didn't not say nothing that wasn't about Dream Theater...)
But yea, something like that or a live Youtube event (but it should still be recorded and released later!!!) where the band can play a show to a virtual audience and even read comments projected on a big screen or something as they're playing would be awesome.