That's significant... it's always been a major hole in his game. He can hit from three, or hit a layup/dunk, but not much in between.
With a decent midrange game, he could really help in the frontcourt rotation.
One thing's for sure, though: I don't want Austin (or Bender) spending a single minute at the 3. If Artest isn't there, then Jackson should be. We want those backcourt minutes for Freddy whenever possible.