If Hans and Roger operate together in let's say Liberty, and Rogues decide to attack Hans (as Roger is friendly with them) and of course Roger stays out of it, what benefit does Hans have from Roger ?
Roger is friendly with neovikings - hessians and corsairs
If Roger is in middle of their fight and one side asks him to join them refusing might be...unpleasant. ( Or the politic behind it it's not to get involved ?)
But if hessians see you docking on corsair bases they might think of you as traitor. Same thing with mollys who are "owners of molly/rogue" tech when they see you friendly with corsairs. (But this is more on the chars personal level, so maybe this is something not included in my comment in a way)
I like the idea thou, but I'm not sure it can evolve more then skype group going together on raids. But I'll wait for more input added.