If he's part of a team I could see him being closely monitored by Captain America, whom Frank admires more than anyone else, despite the fact that Steve couldn't care two whims about Frank and is appalled by him (I'm thinking about the scene from Civil War between the two). I don't like the idea of Frank being on a team, but it could be interesting to see how this happens, if it does happen. Sounds like this is just still in the planning stage.
I think it more telling that Ruka has no planned Marvel work beyond War Zone. Hopefully his contract isn't expiring.