Are the Byrds really out?
I haven't read a lot of posts here but most critics and reviewers seem to think the Byrds got out like they wanted. I don't see that for several reasons. The biggest one being who will run the casino and launder the cartel's money? I don't think Rachel is prepared to do that and it is in the best interest of both the FBI and the cartel to keep it going. So either (or both) of them will force Marty back into business.
Then there is the situation with Mel Sattem. I didn't totally understand where his relationship with Maya ended, but I'll bet she will pursue finding out where he has gone and if so she's like a dog with a bone.