We're almost done with Dungeon of the Mad Mage. The guy that was supposed to run a campaign after this is sounding like he's too busy to run his campaign and the current DM wants a break.
I have Tomb of Annihilation and was planning on running it at some point, but I don't want to commit to a year-long campaign as a DM right now either.
I told them I'd consider running a smaller module from the TMNT books, but then I found Dawn of Defiance for the old Star Wars RPG, so I'm leaning towards that. Neither of those are supported by any of the Virtual Tabletops from what I've found, though. (We live in different parts of the country.) Might just do it mostly theater of the mind style just to do something for a few months to give the other DM a break.
With that said, I started reading the Dungeon Crawler Carl books and they just started a kickstarter for their RPG, which will be supported by a couple of the VTTs...I just don't think it's going to be released by the time we finish DotMM. I'd love to run that, though.
Since our group got together we've only played D&D 5E, so I'm not sure if there will be any friction to running a different system with them, but figure it's worth a shot.