#1 Seth Rollins
Despite the intrigue surrounding the possibility of Samoa Joe beginning a feud with any of the Superstars mentioned, he has one which did not actually end yet. Seth Rollins was the very first guest on RAW Talk and at the end of his interview, Joe interestingly said that he is looking forward to doing this many more times in the future.
The Monday Night Messiah could play a role similar to that of The Miz from Talking Smack a few years ago. He could constantly butt heads with the host, stemming from the bad blood they have had since before Joe got injured. This would continue until the Samoan Submission Machine officially gets cleared, finally allowing him to finish his story with Rollins.
Samoa Joe's first stint as a commentator on RAW ended when he got into the Messiah's face and AOP put him through the announce table. A similar situation could ensue on an episode of RAW Talk down the line, with Murphy and Austin Theory running in to attack Joe.
This moment has potential and could be integral in differentiating the consequences of RAW Talk to those of Talking Smack. Obviously, Renee Young and Daniel Bryan at the time could not get involved physically but in due time, Samoa Joe could get back in the mix.
Having him get attacked while hosting RAW Talk would not be a bad way of bringing him back, especially with the story that could be told.