Prior to the injury, Hawkins was starting to prove himself and Hurley was rewarding that by giving him some extra minutes. I think he was finally recovering from the Battle for Atlantis, where a few tough turnovers impacted his confidence.
If he can play good enough defense to earn minutes, he improves the lineup through his versatility. We have a lot of guys who are specialists (i.e. Polley as a shooter, Whaley as a defender, Sanogo as a beast in the post), but Hawkins has the athleticism and skill to be a tough matchup for opposing guards on both sides of the floor. Whoever is defending Hawkins has to respect him because he can catch-and-shoot, shoot off the dribble, or attack the rim. Obviously, he has to keep putting it together, but I'm very excited to see him return.