Is there any reason to believe that Falcom has dropped XSEED? It doesn't seem like XSEED is big enough to manage all of the titles Falcom wants localized anyways.
Re: VA - Sen III seems to use some sort of pseudo silent protagonist / player stand-in logic when it comes to many voiced scenes, so you have a lot of scenes where there is a conversation between Rean and another character, but Rean himself is not voiced. I'm assuming XSEED will fill in the blanks here.
Pretty sure that was the same in both CS1 and 2 on PS3. Unless Falcom allows it, that won't change.