I am glad to see a good opinion on this theme…
I don't really like all these voices right now. Because they are mostly designed for a sympathetic hero. And all the voices are really similar, I can't hear the difference between them. I already wrote in another topic that adding a voice can greatly spoil roleplaying. There is no character in the voices we have now.
Yes it would be great to have some new voices, and accents too! But the problem of the sympathetic hero is not in the voices but in the writing, right now characters have no personality branching whatsoever, you don't get to choose alignment or personality traits. I hope they do that too, and add personality tags that allow for certain unique interactions.