True. But I hardly remember a time where the bench scored without any of the Big 3 being part of the play. I feel the Celtics are too dependent on them. Especially with their age, its time to cut their minutes. They need to uncover some young talent
While I do agree that their minutes need to be cut a bit, I think you are touching on a very different issue, which, IMO is much more important.
I think these guys, especially Ray and Pierce can still play 30-35 minutes (and more in the playoffs) and be very effective (KG really needs to be capped in the 30-35 minute range). The problem is, these guys can no longer carry the team on the backs for multiple games in a row. Now, they are all at a point in their career, where they are only dominant in spurts, compared to a few years ago, where they could be dominant on a more consistent basis.
What killed the C's this year was that no one other than the Big 3 were stepping up, so that when the Big 3 were not hitting on all cylinders, the team just fell apart.
In 2010, they had a healthy Rondo for the playoffs, and in different games, Rondo, Perkins, Davis, and Nate all took turns carrying a larger portion of the load, so that Pierce, KG and Allen only had to really carry the team to maybe 9 or 10 of their 15 wins. Contrast that to 2011, where they Rondo led the way to 1 win, but the other 4 were led by KG, Pierce, or Allen (or some combination of the 3), and no one else (Davis, West, Green, JO) stepped up enough to lift them to any other wins.
So, the key isn't going to be minutes IMO, it is going to be getting those other guys to play a bigger role. Now, a lot of it will come down on Rondo being healthy. And if Green comes back, he is the most capable of picking up that torch as well. But no matter how few minutes the Big 3 play, this team is sunk if the other guys do not put things together and lift this team to at least a handful of wins in the playoffs.