Some chatter says Toei is looking to ditch the giant robot fights at the end of each episode which I think is half the fun (at least). I've no source for that, so it could just be BS.
As far as Power Rangers goes, I can't seem to muster much excitement over any kind of Mighty Morphin' reboot. It was fine, but far from my favorite series, and it's weird to me that people will only accept five rainbow-ninjas piloting giant robots if they're named Tommy, Jason or Kimberly.
It felt like right at the end of Once a Ranger, we had a good launching point that kept fan-favorite characters like Billy and Adam as mentors to any new teams going forward with whatever concept they put together (in what looked to be a search for Zordon). Hasbro had just figured out how to make their own original tokasatsu stuff (with some relatively good original action scenes in Cosmic Fury), so I figured we were in for some fresh new stuff with just enough old-school presence to please the Gen-Y fans. But I guess that was overly optimistic, because we all know Power Rangers won't work without a Tommy and some dinosaurs.