Fair enough. I mean I guess it could be summarized as "if XSEED could make it work, we'd be getting the games", but still.
I always thought the biggest barrier was licencing the VA - but if it's not being licenced even for the PC version, then there's not much of an issue (they wouldn't need to get it for the Vita version either and could replace it with whatever dub they bothered with for PC). It's not really a case of re-dubbing the entire game because why would they bother if they're not licencing it?
As for working with different partners - I guess, but it's Kadokawa and they seem alright with letting games go overseas (they work with NISA pretty regularly and have worked with XSEED before - on Killer is Dead)
I think the issue is that they have to pay licensing fees to 3 companies, 2 of which they never or seldomly had deals with. So it would be expensive to license and it's for a platform that is dead anyway in the west and for a series that doesn't sell tons of copies.
Xseed were quite transparent about this. They said it multiple times on their localization blogs, forums and in articles that SC would be their last PSP games and that the EVO versions are out of reach but people keep bringing them up. Xseed still releases many handheld games so they would do it if they could.