Louie was always nice to work with. Amy, Steve, Jacko, Louie. I'd say all of them brought something to the table (Louie usually brought an extra large pizza).
If you believe people make radio, then you are more likely to hire personalities. If people are replaceable parts, then you get what you currently have. I put my money on people. CC has a machine that allows them to de-emphasize personality elements.
But you should NOT badmouth Louie. When we worked together, he was fun and easygoing. A good PD gets good mileage out of people like that.
Moo