I feel like Pritchard is a poor man's Chauncey Billups. Tough guy who is not overly big or athletic, but has enough of both to get by. Makes up for lack of standout physical gifts with excellent BBIQ and by simply playing hard on both ends of the court. Quality ball handler and playmaker, with a dangerous outside shot.
Not trying to suggest that Pritchard will ever be as good as Chauncey was, but his skill set, personality and play style reminds me a lot of him. The things he brings are things the Celtics really need.