Unlike the Yakuza games, I can actually see the Valkyria games getting localized simply that the franchise is far more appealing to the western audiences.
That and I doubt the translation work is as nearly as much as the Yakuza games.
They already have the translation for VK1+VK2 done, don't see why they wouldn't bring these two games over personally. The only thing that isn't translated is VK3...