I still think McDaniels is one of the best oc in football so i wouldn't hate it but there would be very little buzz for me with firing Mayo at the end of the year just to bring in Vrabel. It would just feel like a team refusing to let go of a closed chapter in its history. One former Patriots player didn't work so try another.
If Flores and McDaniels as the two with the most power on the coaching staff didn't have the potential of the locker room becoming the nfl version of chernobyl, i would rather have Flores as the teams coach than Vrabel.