Some clients are horrible, others pretty good. However, how many advertisers want Rush Limbaugh doing their spots? He's got an excellent voice, but there's baggage that comes with him doing their spots. He didn't last long doing a Pizza Hut TV commercial, too much negative reaction from the public. Same could be said of Howard Stern. Some listeners would love him doing a spot, others would react the same way as many did with Limbaugh doing the Pizza Hut spots.
The idea of a different voice is an important one. Most stations have the same voices doing the local spots[usually jocks or talk show hosts if not produced by an agency], so when Myron Proudfoot, owner of Proudfoots Furniture Barn comes on the air with his less than stellar radio voice, it draws your attention. Sort of the same way as dead air does. At some point people are listening to the radio, but not hearing the radio, it becomes background filler or even white noise, especially while driving in a car in traffic at rush hour. You aren't hearing every word said.
An example of this was when I was doing a radio show many years ago, and had a trivia contest. I did record trivia's where I'd play a well known artist and play the B side of the record, or a lesser known song if from an album and asked who is singing this song, call in with the correct answer, be the 7th caller and win blah blah blah blah. This one day the phones really lit up and as the hour progressed and was almost up they just weren't getting it. So while I read the weather I inserted, in the forecast, the trivia answer: The forecast for this evening will be clear and cold and the answer to our trivia question is Brooklyn Bridge, the overnight low will be..... No one caught it. They kept calling in and that was one trivia where I definitely stumped my listeners, even when I gave them the answer.
So having that moment of dead air [a mortal sin on old Top 40 radio], or a different voice, even a less than star quality voice, will get listeners to focus. Maybe that's why NPR does dead air in their deliveries, because it causes you to focus back on what they are saying.
I remember a TV commercial years ago, where the woman whispered the entire spot. It caught your attention, because it was NOT loud like every other commercial.
So sometimes different is a good thing.
NOTE to moderator: the must log out to re log in as the time runs out is a very irritating thing and makes one not want to bother to post. Can't you folks somehow fix that????