I think this is a definite possibility that he's going to play a major role in her book. Not that I think Rucka will repeat himself, but Batwoman had a similar dynamic with her father.
See, now that you've put it this way it makes me think maybe Lois and Clark will lean into the affair angle and Trish ends up suspecting they are lying. Puts Trish in the Silver Age Lois role of constantly trying to prove Lois and Clark aren't estranged and maybe even that Clark is Superman.
I long suspected Rucka played a role in guiding Bendis' interpretation of Lois or at least served as a sounding board. But now that we know Rucka is going to be writing her solo book, something Bendis has had on his radar since day one, I agree that Rucka likely played a role in crafting Lois' storyline and the new status quo. I've said this before, but Rucka played around with the idea that everyone thinks Lois is Superman's girlfriend back in his original run. So yeah, it would not surprise me at all if Rucka and Bendis broke down Lois' arc and the marriage status quo together.I'm hoping for largely that, whatever she's got cooking with the Question, and more on her book. As I've said before, I think the book and the more flexible format for the marriage were gifts to Ruka from Bendis. I mean, I'm sure you remember how often Bendis has evoked Ruka's name when talking about Lois in interviews. He even famously said that Ruka sat by his bedside talking Superman stuff while he was sick. I'm at the point where I fully believe Ruka signed off on all of Bendis Lois stuff knowing he'd be coming in eventually for a Lois book that's been heavily hinted at since Bendis was signed.