I'd like that too. I'm also wondering to what extent Ian can get involved with Seymour of his own choice, or whether it will continue to depend on Lena's choices. She's obviously the main victim of Seymour's blackmail in chapter 9, but at least she gets to choose if she wants to go through with it or not. In one of the scenarios Ian risks having his career destroyed, and in the other he'll seemingly stay on Seymour's good side — but Lena becomes his private model (which is obviously worse if Ian and Lena are romantically involved). And everything is out of his hands — he doesn't even know about it yet.
I'm guessing he'll get the chance to get a closer bond to Seymour if Lena works with him, but that would be a really weird deal if he's already romantically involved with Lena. And in the long run Seymour probably won't accept that Lena is with someone else either. He'll want her for himself, just like Axel does.
Hopefully Ian will also get a similar chance even if Lena turns down Seymour, giving him more agency on Seymour's side of the story. And it would've been a nice twist as well — Lena already having turned Seymour down and made it clear to Ian what a shady guy he is, but Ian still choosing to go behind her and Emma's back and taking whatever offer Seymour might have for him.