It will completely and utterly backfire because you can't consistently defend lies.
Will they allow conservative callers to the front of line?
Almost certainly not, precisely for the same reason. My guess is that this will be just another medium for the delivery of liberal spew.
The only half-way decent Democrat I listen to is Mitch Albom...for two reasons. He mixes his show up with some light-hearted humor, and he doesn't avoid the issues.
He typically gives credit where credit is due regardless of his political leanings.
That said, I would still like to reach inside the radio and strangle him frequently.
The question should be, will they allow conservative callers at all? I think, most likely not.