I was in the same boat here. My group moved to Roll20 this month, I really wanted to run Dead Suns but I don't know Roll20 well enough to build it on my own and its not available as a pack purchase, so I decided to pull the trigger on Aeon Throne and run that instead. So far its working well and Aeon Throne is not a bad AP, I just would have preferred to run Dead Suns myself. I cannot say I know why Roll20 decided to produce Aeon Throne over Dead Suns, maybe because it's shorter? I really, really hope they plan to make Signal of Screams next, which is the natural follow up to Aeon Throne and probably one of the coolest AP's imho, otherwise my group will have nothing to run once we complete Aeon Throne. In fact, I made a post about that here but got zero replies to it, lol, so I have no idea what the plan is. If they don't produce something before were done with Aeon Throne I either have to build something myself, or move to something like Fantasy Battlegrounds, which has everything for Starfinder. I know there are several groups that have run Dead Suns on Roll20, and I did some searching for anything I could import to make it easier to build, but all I found was a tutorial on lining up the maps. I am shocked someone hasn't put something together for it in Roll20.