You should make it more like the original, because the original voice has 2 sides to it: 1 side was where she spoke nice and slow, and buttered the words, but beneath the butter was the uneasiness and fearfullness; she let you know shit was going down, and not to fuck with the UCA.
EDIT: You could take the current voice we have now, and make custom sounds for it.
I just like the current voice better, if you made custom voices for /dispatch, that would be awesome.