Well good morning! I guess it just depends on what Kirby wants to do. There are no more superstar defensive coordinators in the NFL anymore (Monte Kiffin, Dick LeBeau, Jim Johnson, Buddy Ryan, etc). The way the rules are set up now to favor offenses and "player safety". (side note: I always take thus into account when looking at the records that players like Drew Brees and Calvin Johnson have broken. Would not happen in the NFL of the 80s and 90s).
So as it has been stated, this might be a good experience for Coach Smart, but I can't imagine this raising his celebrity any more than it already is