Maybe I'm deaf, or ignorant, or whatever, but in the Japanese original, all the VA seem to be talking in the same/similar accent, well, with a lack of any accent to be precise. From what I gather that never bothered anyone. I'd rather them stick to British accents if that's the case.
I'm sure Wuk Lamat would have sounded a lot better without that weird, phony "south American" accent she was trying to put on. Ditto for the weird southern USA accents in Shaaloani.