Best possible scenario would be re-signing Fitzpatrick and bringing in Josh McCown to back up him. Get Geno Smith off of this team.
Surround Bryce Petty with veterans.
Yes please. If Fitz struggles or reverts to his old ways of getting hurt, McCown can theoretically go two more games without getting helicoptered into another concussion.
I still like the idea of Fitz and RG3 since the long term reward with Griffin is substantially higher than McCown, but with McCown you get exactly what you need, a solid backup who can start if needed.