To add my name to the list: I’m also very interested in a Tales of the Vast Foundry module. We want to kick off Starfinder with our group, and I was really looking forward to running Tales of the Vast, especially due to its structure allowing for players to try different approaches.
We‘re very content with the module quality for Pathfinder and thus were hoping for an easy switch of the system. Sad to hear that it had to be dropped, but it sounds like there’s hope for the module to be introduced later on.
