It's probably the only thing I don't like about Oblivion, was that they had ONE voice-over actor for each race, both male and female.
Nope, they actually had 6 voices for 10 races (which is 12 voice actors for 20 gender/race combinations).
The Imperial voice is unique.
The Redguard voice is unique.
The Breton voice is unique.
The Nord and Orc share the same voice.
The Dunmer, Altmer and Bosmer share the same voice.
The Argonian and Khajiit share the same voice.
Even 1 voice for all races (20 voice actors for both genders) would be a great improvement.