That is one area Atlus really need to fix, all they ever make on their own on 3DS are EO games these days (DS2BR was vaporware for ages, think it was supposed to be out in 2013 or something).
The variety comes from what others make that they localize, that's wonderful, but Atlus are capable of so much more.
I've thought about another Persona they could attempt on 3DS (Persona Q did REALLY well), personally another P4 game (it is still the fan fav after all) in the style of SMTIV. Another suggested a Devil Survivor-style one, hmm, maybe?
But SMTIV, but actually with the battles of Persona Q, could be a treat, also making sure they aren't chibi this time, since they claimed that choice was also down to it being a "crossover" with EO to match the style.
What about that trademark they had? Devilizer was it? That sounded like a shoe-in for 3DS if that ever showed up. I also thought that game they made for DS near the end should've gotten a Devil Survivor-style port to 3DS:
https://en.wikipedia.org/wiki/Nora_to_Toki_no_Kōbō:_Kiri_no_Mori_no_Majo
As I said, they just need to do more than just EO over and over again, at least on 3DS. I'm still hoping that EO5 is actually a Wii U game, one of the games that would be a match made in heaven on Wii U with the GamePad. But alas, it's surely not happening.
Honestly it's shocking they'd been so silent about it, they announced it at the same time as Etrian Mystery Dungeon, that came out, but no word of EO5 for some reason.