BBalltim,
Not necessarily.
After a little research, here is a quick rundown of our draft picks from 2003 on compared to players still on the board.
2003
Celtics - Marcus Banks
Available - David West, Josh Howard, Keith Bogans, Kyle Korver
2004
Celtics - Delonte West, T. Allen
Available - Kevin Martin
Celtics - Justin Reed
Available - Trevor Ariza
2005
Celtics - Gerald Green
Available -David Lee, Brandon Bass, Andray Blatche
Celtics - Ryan Gomes, Orien Greene
Available - Marcin Gortat
2007
Celtics - Gabe Pruit
Available - Marc Gasol
And finally a recent one where swapping these players really hurts....
2008
Celtics - JR Giddens
Available - Deandre Jordan
D. Jordan, who in the last three games of the regular season had 10 pts 15 reb, 10 pts 13 reb, 12 pts 9 reb. At 6-11, 250 pounds, sounds like somoeone who could've helped this year and next, particularly with Perk's injury.