At this point in time, I'm thinking Disney keeps renewing Millionaire just to keep Sony from claiming full U.S. rights to it (kinda like how Sony and Fox made, respectively, new Spider-Man and Fantastic Four movies partly - at best - to keep Marvel/Disney from using the characters in movies, tho in Spidey's case the rights are now being shared). Aside from FABLife's cancellation, there really should have been no reason to renew it.
As an aside, in the ABC deal for Right This Minute, Disney will take over syndication from MGM, meaning Mark Burnett (who now runs MGM TV after United Artists Media Group was recently folded into it) won't have control over it for very long.