As wildly inconsistent as Purvis was this season, he's so much better now than he was when the season started. His emergence the past few weeks could be enormous for next season - a core of Adams, Purvis, Hamilton, and Brimah has the makings of a tourney team, especially if some of the role players (looking at you, Facey and Omar) play better next year.
Purvis NEEDS to get his FT shooting to a respectable level, though. He's a completely different player when he's mixing 3-point attempts with drives to the basket, but his reluctance to drive consistently probably has a lot to do with his poor FT shooting.
Get that percentage to at least the high 60s, and we're looking at a much more consistent player.