Given that I am a die hard Persona 4, and Persona 4 arena is being held dearest to me, and given that it was such a success, I believe it deserves a vita port. Arc system works fighting game hit Blazblue gets a PSP, 3DS, and a vita port, but where's Persona 4 arena's chance?
A Persona 4 Arena port is definitely something the vita environment needs. Between the fantastic gameplay, its compelling story, and memorable characters, Persona 4 Arena would be mind blowing on the vita. Months ago, Persona 4 Golden was released, with perfect scores everywhere, it was indeed a flawless port due to its updates in gameplay, story, and extras. Persona 4 Arena is just one last thing the Persona 4 franchise could use, and maybe even Adachi as a DLC character, that would be pretty awesome.
And because of its 2D style graphics, I highly doubt Persona 4 Arena would have any limitations. Though I will admit, for a 3D fighting game, DOA 5 Plus was flawless! While I doubt Persona 4 Arena will get its shot, I think it would be a smooth move on ATLAS to make this happen, or at least some type of follow up, perhaps a story regarding Labrys, Mitsuo, Akihiko, and Aiges's mission to find the perp who threw Labrys into the tv. Perhaps some cross play method would be nice as well. An entire update to a Persona 4 Arena in general would be fantastic, because personally, as much as I loved Persona 4 Arena, I felt its DLC was lacking.
I have a feeling it will be a while before ATLAS even thinks about porting Persona 4 Arena to any handheld system, So tootaloo!<3<3<3