I don't want to taunt you, but you should see the discussion we've been having in VIP where we have gone over the Coryell coaching tree with a fine toothed comb. That doesn't really reach Mularkey or Shula, but it certainly touches on Cameron, Garrett to an extent, and Zampese.
I'll give this a shot:
* Shula's plusses include running a successful program in Alabama, giving him real live head coaching experience. He seemed to do excellent work with Jay Fiedler (to the extent that Jay was really unhappy to see him leave) and with Brodie Croyle. His minuses include a not so great offense in Tampa Bay (though he also had very little talent to work with) and some issues people see with his play calling this past year in Alabama.
* Mularkey's plusses include the time in Pittsburgh, including the career resurrection of Tommy Maddox for one year. His negatives are pretty well known, though it's difficult to know how much of the struggles last year came as a result of asking him to run Linehan's offense without any guidance as to how it was run. He'd be asked to run Cam's offense, but Cam would be around to help him do that.
* Garrett's plusses include his tenure with the team and the opinion of people like Bill Parcells that he's going to be a great coach. He has also played in the Coryell offense Cam uses. If you ask me, the negative with him is the poor level of QB play this year.
* Zampese's plusses include his time in Cincy working to improve Carson Palmer's game and his time in that offense which isn't a Coryell offense. He should be familiar with what Cam is doing since his dad was one of the early branches of the Coryell tree. I'm really not familiar enough with him beyond that to say much more about him.