I didn't see any 8-bit mini-games in that trailer.
Seems like another instance of Japanese developers trying to make what they think the western audience wants and ending up a whole bunch of nonsense. YMMV.
I'd also like more parody/deconstruction style games like Torment(for WRPGs) and Barkley, Shut Up and Jam: Gaiden(for JRPGs). The latter is free and awesome, by the way.
I think the theory was that you need conflict for a story and literally fighting people is the easiest way to do it. And now all you do is fight a variety of things.