A super difficult bonus NG+ Dungeon (spoilers)

Just a pure dungeon dive filled with level 80, 90+ enemies, all of them having new and more powerful skills and resistances than when encountered in the course of the normal game. Where you have to be prepared for and careful of every encounter, because you simply don't know what the enemy is capable of. With powerful bosses at the end of every floor that really make you think and pull out all the stops to beat them. Where all the effort you put into making that perfect Persona is rewarded.

As much as I love Persona games for being different from most JRPGs, sometimes you just want a challenge, and that's something Persona games really don't deliver, at least not after the game's mid way point. Something like this is my ultimate wish for most RPGs. Let me make full use of every system the game gives me, and give me something worthy to pit the results of my effort against.