I think that management at WBAP is to blame for the bland local talk show hosts we're subjected to. They've got a lot more in common with the GOP-e than their listeners do, so they hew to the middle, and insist that their talk show talent does, as well.
Very few (if any) of the local talkers are unreservedly conservative, or stridently outspoken. John David Wells of KSKY is one of the few who fits that description, though he's careful not to gore too many sacred oxen, either.
On the other hand, talker Ed Wallace, professed "former brain dead conservative" of KLIF, is overtly liberal. Sigh....