Detmer isnt a bad choice. My wish list would be a guy with experience, but also a guy who play within himself and wont take chances.
With the current makeup of this team, if we had to go to a #3 QB, I would want him to play extremely conservative, and just take the short stuff. If we are at #3, the gauge of success IMO will be not throwing Ints and not taking sacks more than having a lot of success throwing the ball. Logic says if we get to #3 it wouldn't be long, so we would be able to play a conservative run oriented style, and win with D. The worst thing we could do is throw a high risk high reward type guy in there.
Detmer seems to fit that. Feidler would too. Really any experienced West Coast Offense QB could be adapted to our system within a conservative game plan. We would be back to 'dink and dunk'
Maddux IMO would not be a good choice.
Finally, forget scout team, the criteria needs to be who gives us the best chance to win games in the event they have to play.