Sounds like Mads Mikkelsen kinda wants to do a pre-Rogue One Galen Erso movie:
Reflecting on the role, Rogue One actor Mads Mikkelsen told IGN Japan that he feels Galen still has unexplored depths.
“We don’t see him a lot (in Rogue One); we get a feel of him,” Mikkelsen said. “Obviously you could elaborate on a character like that for his own movie. The story (of Rogue One) is about his daughter, and for that reason he plays a sidekick in her life. If he had his own film it would be different.”
Mikkelsen, who also recently spoke about wanting to play Spider-Man and his role in Death Stranding, explained that the richness of the Star Wars universe allows scope for even more stories, and that he senses a particular interest in exploring day-to-day life for ordinary folk under the Empire.
“I think there’s an unlimited source to go back and tell those stories,” he said. “I think people are curious about the Empire as well, to see some back story on the Empire. What kind of people are they? (Galen’s) family, his wife and daughter, we were part of the Empire – and we’re not monsters. So obviously there are (regular) people in there. And why do they do what they do? What do they believe in?”
http://www.ign.com/articles/2017/12/08/ ... galen-ersoThe Erso family's life looks like it was pretty well mapped out in the book
Catalyst: A Rogue One Novel, but that book might make for the basis of a pretty good Average(ish) Joe family-level drama set against the backdrop of a tumultuous galactic war, regime change and hidden agendas, broken promises and family life, etc. It'd be pretty neat to see more of Krennic, as well, as his rise is also chronicled in the book.
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