Was Frakes onboard? He was number two in the credits ("Starring Patrick Stewart as Captain Jean-Luc Picard / Jonathan Frakes as Commander William T. Riker / Also Starring these lesser people"). If his character is demoted to "Lt. Cmdr. Thomas Riker", then he would probably be moved into the Also Starring category and, perhaps, Spiner moved to Starring (or they just keep Stewart and everyone else becomes "Also Starring", a la DS9 & Voyager, or make everyone "Starring", a la every series since Enterprise). This seems unimportant, but actors negotiate these to death in contracts. It would look like a demotion, even if there's no pay change, and there'd be alot of gossip about that even if Frakes and Paramount give out press explanations (the question will pop up constantly, over several years, and at every convention).