Soft voice (elven-like)
Gruff voice (dwarven-like)
Posh voice (educated, higher class)
Peasant voice (less educated or less eloquent)
Older voice
Commanding voice (soldier-like)
etc.
I'd love this, but I could imagine it takes a huge amount of time and effort to re-record all the voice lines for each voice, and then you'd have to do it for both male and female voices.