Taysom Hill isn't starting NFL QB material, and he's never going to be. The man is in his 30s, too late to rebuild his mechanics and make him a proper passer. I know he managed to win some games last year, but he had a better supporting cast around him than what Siemian currently has to work with. I'd be willing to bet that putting him in as the starter would result in more lopsided losses than anything. Seems Payton has the same idea, or he wouldn't still be rolling with Trevor over Taysom.