I'm not the biggest fan of the NBA, but i respect the hell outta what KG, Allen and Pierce all did. Not many guys would put there egos aside like they did.
And it would make sense for Jackson to come back he has the easiest job in the league.
I get what you're saying about the 'ego' thing, but this is apples and oranges as far as Lebron and Wade go. See, LeBron and Wade are entering their absolute peaks in their careers, where they are clearly 'the man', and Wade already has a ring. But with the Cektics, all 3 of those guys were entering the twilight of their careers, and they hadn't won jack yet. It was either put aside their egos or go ringless forever.
Also, it was completely different because LeBron and Wade both need the ball in their hands to do their thing, especially in the 4th. Garnett has NEVER wanted the ball in the 4th quarter (see: Game 7...one for three FGs for the hottest Celtic. Hmmmmm...3 shots KG? Really?), and Allen never been an elite one on one player. So only Paula Pierce needed the ball in his hands late. That was BIG for them as far as egos went. But even after saying all that, they still had troubles at first and they still had to have meetings, b/c yes, they did have to put their egos aside. But Wade and Lebron and Bosh and (possibly Rose) will have a much more difficult transition IMHO. (But still, as a die-hard Laker fan, those 2 guys together scare the shit out of me!)
As for your Phil comment...it's not as easy as it seems. Kobe is a difficult SOB to coach, in that you have to weave him into the team unit, as he is kind of a loner and madly focused on winning, being liked be damned. And then you have to manage the egos of all those stars...Kobe, Gasol, Odom (getting him to buy in and come off the bench), Bynum (wanting the ball more a la a young Kobe to prove he's arrived), Farmer increasingly wanting more minutes, etc etc. And then you have Ron Artest, a one-time offensive force who wants to prove he can still score, and oh yeah, he's clinically INSANE. All this with a fanbase expecting a championship or bust. Not an easy job at all IMO.