Those of you old enough, remember back to when sprites were replaced by polygons, or when transform and lighting became and thing, Tessellation. all of these and probably many more have given a large hit to performance, but the hardware will improve and it will become the norm. it will just take a bit of time.
As for if the console can only do minecraft a 1080p 30fps, and you don't want it, maybe you won't get a choice, it will be a console release after all.
As for if the console can only do minecraft a 1080p 30fps, and you don't want it, maybe you won't get a choice, it will be a console release after all.