I guess I think of it this way, so long as Drek still has that deep voice that we are used to, I don't really care who does it, so long as it sounds good and doesn't sound like a little kid or something. Or have that more common sounding voice that you hear all the time that sounds so much like everyone else that you can't even tell who the actor is. That is, if that even makes any sense. That's the main thing that set him apart from most other voice actors was that deep voice that you don't hear all the time. Kind of like Roy Conrad who voiced Ben in the 1995 game Full Throttle. That was the only reason they asked him to do the lead voice was because no matter who else they talked to, no ones voice matched the character's personality and attitude like his did. Point of the matter is, so long as it matches his personality and attitude, it doesn't matter who does it.