Much of this discussion has focused on who will be the, um, "sixth man" or, more accurately, the first player off the bench. Time for a refresher on this topic.
Red Auerbach, whose coaching credentials are well documented, is the guy who invented the concept of having an extraordinarily talented player to start the game on the bench, violating all coaching precepts then in existence.
Red was simply smarter than all those other coaches. He wanted the Celtics to get a distinct boost from the first substitution (usually about halfway through the first quarter) as the opposing team brought in a lesser talent to replace a starter.
The first famed "sixth man" was Frank Ramsey, who actually preferred to come off the bench. He did it for 9 years, averaged 13.6 ppg, played on 7 NBA championship teams, and is in the Hall of Fame.
Next came the legendary John Havlicek who, like Ramsey, could play multiple positions. Thus, Red could sub Hondo in front- or backcourt, for a guy with a cold hand or one with a couple quick fouls, or to create a matchup problem. Looking back, Diana and Maya and Kaleena have provided Geno with similar flexibility.
Havlicek was not "sixth man" for his entire career, which was a good one. In 16 seasons, he averaged 20.8 ppg, 8 NBA championships, and Hall of Fame.
It will be interesting to see which Husky is anointed to be FOB. (First Off the Bench)