For those projecting guys to come back new and improved I dont want you to forget the complete epic fall off of Douglas in one season, the regression of Fields for a complete season, Walker turning to complete trash. Fields had the whole lockout season to work on his jumper and handle yet he came back with a total lack of a jumper. Douglas came back with zero skills and no improvement.
We can also include guys like Channing Frye as a perfect example. The guy was NEVER the same after the knee injury.
Depending on guys coming back from injury or young unproven players to come back new and improved is fools gold. Especially for a team trying to compete for a championship. So lets not project guys into the starting lineup just yet.