Fair enough. I'm just curious as to whose names are being bandied about as future GM material. That's a lot of names. Some of the teams are not so surprising to me - San Antonio, despite the recent exodus of other young up and comers, Cleveland, Portland and New Jersey - others, like Indiana, I'm a little surprised by.
I do think you make a valid point not only in the need for a coach to build a network (it's not what you know...) but also in pointing out that it's detrimental to stay as an assistant in one spot for too long. That gives you the risk of becoming too pigeon-holed and thought of only as a defensive expert rather than head coach material (unless you've already been a head coach - i.e., Carlesimo was an assistant for a while, but had already been a head coach, so regardless, his name stayed near the forefront for coaching vacancies). For example, Dick Harter (who had one brief head coaching stint).
While Boston is a good situation for Thibodeay, particularly if there was a chance he could take over the head job in the not too distant future, there's little reason to believe (despite Doc's frequent mention of wanting to spend more time with family) that Doc would leave the Celtics in the midst of a title contention run after years of coaching also-ran teams. So, yeah, I would tend to agree that while being an assistant in Boston isn't bad for Thibs, it might not be the most helpful path toward a head coaching job. Turning around yet another team's defense - Indiana, New Jersey and Portland seem like strong possibilities in that regard - might be a better opportunity. He's already proven what he can in Boston - he can't do much more than he did last year by building the best defense in the league in one season. While I love having him here, I think you've convinced me, Who.