This is interesting, Inorigo, and I'd like to elaborate on this.
Imagine that outside of the "mainstream", we've got a demographic of varied RPG players. So out of however many millions of RPG players this demographic has, very few of them have played or even heard of the Persona games. There is no doubt that, for example, P4G is an amazing game that these people would love, as is, despite any "mainstream" aspects it has. One could argue that:
- P4G is already a step toward "mainstream" by streamlining gameplay systems
- P4G is already a step toward "mainstream" by extricating itself from established fiction
Okay, so these two examples could be seen as "mainstream", but more importantly, in my opinion, the barrier of entry to the series has been lowered. This can be a good thing. Aside from hype or whatever, people typically consider investment made on interest kept - high marks in reviews also help.
Alright, back to that demographic of varied RPG players that I was talking about. Some of these people are playing Final Fantasy games, Tales games, etc. Others are playing MMOs, CRPGs, and open worlds. They've never played Persona, they don't know why they should, and even if they did, they might not know where to start. Here is where I think that Atlus could either fuck up or break out:
- appeal: "globalization" or "cultural ambiguity" like Catherine; no honorifics, etc
- combat/dungeons: less passive approach, more player agency in progression, etc
Yeah, Atlus could really mess up Persona 5; furthermore, you'll always have a divide between the interest of newcomers and older fans. I personally think that more "mainstream" RPG players should enjoy the series, but I have no idea what would be the best way to deliver the experience.