They should just name DA the starter now & say Cam will be the backup. Practice DA with the 1s during media portions of practice, then switch Cam to the 1s when it's private.
DA comes out of the tunnel & starts the game. Handoff to Stewie on the first play, then Cam comes in for DA.
Stadium would explode.
That would be dumb and unless the Panthers morph into a pee wee football team, I don't see a single purpose it would serve.