Since the game launched, I found the Ogryn voices to be very underwhelming. They are giants but they talk like regular humans. Their vocal chords are at least 4 times the size of a normal human being and that should be reflected in their voices.
The voice lines are great, as well as the actors, but the voices lack the depth and bass you’d expect from someone that size. The Mutant has the correct voice.
All I’m suggesting is that a filter get added to their voices to make them sound their size. More Bass, slightly deeper tone.
Just look at this guy: