If he is as talented as they say (and I think) he is...then I see no reason why he shouldn't be our starting quarterback. He "knows" the playbook, comfortable with the calls, and has the confidence to take on the task. Give him the start!! We drafted him NUMBER 8 OVERALL!!! You need to expect a top 10 talent out of college to come in a compete, if he doesn't win the job outright, or is starting by mid season then I would start to second guess the decision to draft him.
Sitting doesn't help as much as people might think, if they have the ability to win and the talent around them to compensate for bad days get him in there. TJ Yates?! if he can take over a talented team and win a playoff game, Tannenhill most definitely can!! The down side is that our Division is a lot tougher than AFC south in that regard...but Our division just got a lot more competitive with the Tanny addition, keep the optimism up and expect greatness.