Let's do this in the only scientific way I know how.
If you would take Ryan Mallett over your current starter, post "aye".
All others, post "nay"
Opinions. Doesn't make my opinion any less valuable. The question still stands to darkest: what makes him a career back up?
Using Hoyer as an example: he has had chances to start on a couple teams and did not set the world on fire. Mallet got his chance to start, looked good and then promptly got injured. Not exactly the same thing