A PlayStation Vita re-release of the original Hyperdimension Neptunia made a lot of sense. The original game, released way back in 2010 on the PlayStation 3, was a great concept but a terrible game.
And that remake, Re;Birth 1, was a very good game indeed. However, the the sequel to the original Hyperdimension Neptunia, Hyperdimension Neptunia mk2, was already a marked improvement in every sense, so I question the relative value of this new remake from Idea Factory and Compile Heart. Sure there are some improvements to the games mechanics, and a couple of additions in terms of characters and the like, but the enhancements are relatively minor this time around when compared to the original, which makes it a slightly more difficult purchase for those who have devoured the original release. Unless, of course, you're dying to have the game on a mobile platform.