I don't think there's such a thing as a "typical rebuilding period".
Sure there is, it's just a wide range.
But I can tell you that at a minimum it's longer than 2 years.
I think what I appreciate about the Philly rebuild plan is what Lowe describes as Philly's lack of interest "in any team-building path they can’t control almost completely."
That commitment to a process that has as many controllable factors and certainty as possible, with a path to a talented roster that is easily charted and predicted, even if it's impossible to say in any given year where in the top 4 or 5 picks they'll end up.
If Philly is really willing to do this for five, six, or seven seasons, it almost cannot fail. It will either land a superstar or draft so many good players that they will gather a solid NBA team.
There's a lot of appeal to that, instead of sitting here just hoping that eventually this middling roster of role players will get shuffled around enough times that it will begin to make sense.
Sure, Philly might stink for 5 years, but the Celts might be muddling around in the middle for 10, or 15.
Of course, the problem is that a talented roster is only one part of the equation, and Philly's commitment to that same process could make it very difficult to retain and maximize that talented roster.