Maybe not everyone have a own voice. That would become pricey. But at least a huge pool to select from. The whole 2 actors for each race was horrible. Drove me crazy. I honestly wished that they didnt talk. That dialogue was just read like in Morrowind. It was that bad to me.
~Regards, Wolf-Lord
There were less than 1 unique actor per race in Oblivion, not counting some of the few special characters. Orc and Nord, Khajiit and Argonian had all same voices for male and female characters, plus female Imperial and Breton. If i remember correctly, that is. It didn't seem that horrible to me, if they polish facial expressions a bit and have like 5 unique voices per race, it would be a huge improvement.