Thanks to the collective efforts of Nintendo and Steam, we had to wait an extra year and a half for a real version of this game, but I just got mine a few days ago and am rather enjoying it.
It's fairly different from the previous Compile Heart Vita DRPGs on the Vita. More complex and mechanically involved. Just from exploring the first dungeon, there's more gimmicks and travel options, more resources to manage, and overall the maps so far seem more complicated than the likes of Mary Skelter and Moero Chronicle/Crystal where they were all pretty basic. You can crush walls to find shortcuts and hidden treasure, dig through holes, float over gaps, etc. Combat/party comp-wise, in addition to your typical classes (Digiskins), you've now got SMT-style demon fusing (Gadgetta), weapons having their own attack and support skills attached depending on both the weapon and its rarity value, elements that are not only factored in when attacking enemy weaknesses but also with the users' own elemental compatibilities, armor having skills too, etc. Combat tries to be different from Mary Skelter and Moero as well; you now have an Action point system (EP) where you can take as many actions as EP allows, while magic (Digimagic) is its own separate category independent from AP with fixed use limits per dungeon crawl. In many ways, this feels like the "final form" of Compile Heart dungeon crawlers on the Vita. A very pleasant and welcome surprise. Even its version of the trademark Compile Heart