We've all heard in some form or other that this team just hasn't played Celtics basketball: that the new additions to this team "aren't Celtics," "somehow expected to be Celtics jus by putting on the jersey," "don't know the 'Celtic way'," etc., like by simply walking into the locker room of KG, Pierce, and Rondo, they would automatically become 'Celtics.'
It obviously didn't work that way, but maybe, because of the adversity, this is the opportunity for a core group to earn their Celtics stripes.
Since circumstances have now turned into such a "no one expects nuthin now'" situation, this is a good time to let Pierce and KG leave a legacy of sorts, and if there is such a thing as Celtics culture, mentor a core group you'd want going forward.
If not, imagine the 'Celtic-ness' of next year's locker room, with Pierce and more than half of this group gone, no continuity, and a bunch of new players who, in all likelihood, have never won anything wherever they've been playing.
Use the remainder of the season to develop roles for Green, Bradley, Sullinger, Lee, and Melo. And if there's such a thing as Celtic culture, let them develop it on their own. Start integrating that into what's left of Pierce and Garnett and set the base for next year.
As well, try and get something for Bass and Terry, i.e., a serviceable veteran or draft picks; look closely overseas for a solid piece, a post-draft-age shooter or banger; draft judiciously.
Put together a team that plays smart, plays hard, plays for one another.