There are no guarantees in this league whether you have a proven coach or a new coach.
If teams didn't give coaches asecond chance then the PAts wouldn't have a dynasty. The giants wouldnt have won a sb with their current coaches.
The broncos arguably have a better team than when Shanahan left and this is with a rookie coach in McDaniels. Time will tell where the broncos are headed and if Shanahan can build a SB team in Washington.
Did we screw up with Dick? Certainly. But teams like the fins did screw up with guys Cameron and replaced him with a first time coach like Sparano who so far has done a decent job. Same goes for 1st time jets coach, Ryan.
THe saints hired a first time coach and ended up with a SB.
If we hired either Peyton ,Sparano or Ryan, people would be complaining too . So no matter who we hire, we're screwed.