Rebirth seems like a pretty significant step into the right direction in terms of gameplay, world structure and variety but is almost assuredly held back by being a sequel, a partial remake, not really a remake, and part of a convoluted multimedia compilation of media spanning close to three decades. If you aren't already part of the core target audience for it, it looks extremely uninviting and I feel they were never able to shake off this image. I constantly see people even in enthusiast spaces who believe that you first need to play several games and watch a movie for Rebirth to make sense which seems like a pretty big marketing failure.