While I agree that Rondo has improved, his game is still quite erratic, as the last two games of the Chicago series illustrate.
And, I frankly don't believe Pruitt has proven much of anything. He's consistently mediocre, and I'd like more out of the position than he's provided - or Marbury, for that matter, although Steph is my clear preference for the rest of this season.
When you cannot get bench minutes on a team with this kind of a bench, you're clearly not long for Boston.
PG isn't my top off-season priority: finding a competent 3 to backup Pierce is. However, I am far from sold on Gabe Pruitt, and I'd certainly move him in the right deal.