Aside from wanting to avoid feeling like I'm living a Celtics-fan version of "Groundhogs Day," the main reason I would prefer to see Pierce and Garnett go elsewhere this off-season is that while this team has a decent stable of relatively young assets, we can't really say for sure what we have on our hands here.
Jeff Green
What would Jeff Green look like if you started him at small forward for an entire season and played him 36+ minutes a night? Could he continue the kind of production we saw from him this spring if he an undisputed top scoring option on the team, with nobody to defer to except perhaps Rondo? There's so much controversy among the fanbase over what sort of player Green really is, with both staunch believers and outspoken naysayers in large, vocal numbers. Whether it's to up his trade value or to see if he's a guy we want to have as one of our building blocks moving forward, we need to know what we've got in Green.
Avery Bradley
How would Avery Bradley perform if he had a full, healthy training camp and started from the very beginning of the season exclusively at shooting guard and played nothing but shooting guard all season, 32+ minutes a night? Can he be a consistent enough scorer to not be a liability on the offensive end? Can he adapt so that opponents can't game plan to neutralize his defensive intensity by getting him in foul trouble early?
Jared Sullinger
Sullinger will need to be brought back gradually, but once he's healthy, what sort of player can he be if he were placed in a starting role, playing 28-32 minutes a night or more? What sort of production could we get out of him?
The Center Position
Who is going to play center for this team moving forward? I'd like to see the team draft a center, either with #16 or with another pick they acquire in the first round, sign a veteran center over the summer for relatively cheap (e.g. Dalembert) and then have the veteran, the rookie, and Fab Melo split the center minutes three ways and compete for time all season.
Style of Play
Can this team play an up-tempo style? Yesterday I read that Doc has wanted to play an up-tempo style with this team for the past couple of years, but he hasn't had the personnel. Well, he sort of has, if you look at most of the roster -- Rondo, Bradley, Green, Lee, Barbosa / Crawford, even Terry; these are guys who could play up-tempo. But as long as Garnett and Pierce are the focal points of the team, they will fall back on the half-court, slow it down, milk the clock to get Pierce an iso shot or work Garnett free for a mid-range jumper offense they've gone to repeatedly for the past 6 years.
A secondary part of this point is the supporting cast -- can guys like Courtney Lee, Terrence Williams, Jordan Crawford, and Shavlik Randolph, who are probably all better suited to a quicker, more athletic style of play, fit in better on this team and carve out roles for themselves moving forward if the team plays more to their strengths?
Rondo
Most important of all, what would Rondo look like if (once he's healthy) he plays every game knowing he's the longest-tenured, most accomplished Celtic on the floor at any given time? What would we see if this is finally, truly Rondo's team? I know that this year was supposed to be the year that happened, but I don't believe Rondo will ever play like this is really his team until Pierce and Garnett are gone.
This team is no longer a contender. We have some good players on this team, still, however. We even have a guy who could probably be on the fringes of the MVP conversation if he really played up to his dominant potential for the majority of the season (doesn't even have to be every night). However, we won't really be able to fully assess the value of the pieces we have until the team moves away from trying to build around and compete for a title with Pierce and Garnett, in my opinion.
It's time for us to see what we have.