That's true...usually she uses Kido Kiyo Strings or Konno Hitoshi Strings, at least according to the booklets, so they definitely aren't full orchestras. And the harps/horns/etc. are synthesized, I think. (Well, to be fair, the horns in RHH OST 1 were real, but I've never seen a harpist credited.)
It would be lovely hearing new, fully orchestrated songs from Kajiura-sensei, and I agree that she has the potential to write them! Even if she needs time to work up to it, she could just start out making orchestral versions of vocal songs. I personally would love to hear that for Kyrie, Fairytale, (We Are So) Together, etc., like the version of Anna Ni performed by the London Symphony Orchestra.
Although that wasn't arranged by Kajiura-sensei
By the way...what sort of group is Eminence exactly?
Sorry for leaping into the conversation again