What I fear the most right now is that they go back to the rotating producer style of W -> Gaim, where we get producers going and coming from Sentai and we get another show produced by Utsunomiya. Right now after Lupinranger vs Patranger he just hasn't been involved with anything aside from Lupat related stuff. He hasn't appeared as a secondary producer or producer of something outside of tokusatsu, so there's a chance he will be the producer of the next Rider series. I hope though that this is just another Ex-Aid --> Build situation though and we'll just get Ohmori again.
Utsunomiya seems to think that the shows only need a strong set up and then a conclusion, with the entire middle of the show being throw away. Kobayashi manages to do some decent character development to carry his series, but even so I'm just not fond of that way of looking at a series (and it has been a few years now since she actually wrote a script for toku). In Rider's case it's not even a traditional structure since older Heisei series weren't like that and even Showa series, although episodic, generally had a few distinct "phases" throughout, sometimes ending up with completely new villain factions later on.