Exactly, considering they put it on the poll before anyone had even voted it in speaks volumes. The handheld versions are the definitive versions in general for every Persona game except 3, where there is still debate.
A definitive edition would rectify this, as well as allow for a dedicated Persona collection on Switch.
If Vita is not feasible or possible, then there's no other choice than Switch, so Switch. I guess nothing is a choice too. Switch is much better than Vita, so it would be preferable on Switch, but it is what it is (or will be).
Even more reason for Atlus to go for the Switch. Unless Sony is planning another handheld that will release in the next year or so, I don't see the point in going with a handheld that's stuck in decline worldwide over one that is only growing.
This is another good point. Even beyond the unanswered question of releasing a large game on hardware that is discontinued (frankly the idea of a big Vita release in the US in 2019 or 2020 is pretty funny), is it really feasible to get the filesize down to 3.3 GBs? And at what cost would that come at? No more multiple VA languages for sure, and plenty of compromises elsewhere, hardware power issues of the Vita aside. Switch has none of those issues, so for the vast majority of people who play it on a handheld, it'd be a far better choice than striping it down for Vita.
My preferred p5d game though is *Endgame Persona 5 spoilers*
Persona 5: Defense. I mean Sae does quit being a prosecutor to become a defense attorney. Persona 4 got a fighting game and a rhythm game, an Ace Attorney esque visual novel starring a side character doesn't sound that outlandish.
To be fair P4 was perfect for the job but Atlus somehow managed to give it a horrible track list full of awful remixes of the same songs that were already in the game in their original form, so this doesn't matter much. The damn thing had like 7 good songs in the end, such a waste.
I can see them re arranging plenty of them to fit a rhythm game with relative ease.
Aside from the fact that a lot of rhythm games have music that couldn't really be considered dance-ready, there are a good number of songs in P5 that would be good to go as is and the rest would probably get remixes like P4 did