People are saying he has bad hands. It may be reaching, But Im wondering were he had played soccer for 2/3rds of his life has some thing to do with that.
You know a game were you can't use your hands and its a turn over if you do. Its in his head not to touch it, so he doesn't go after it like most people would. I have see improvements on this. Right now he has trouble catching it on the run. He needs to just to drills with Rondo running up and down the court with a defender and Rondo giving him bounce passes on the fly.
good point on melo. it may not be a case of him being cursed with "mark blount hands" as part of his DNA. rather, many americans grow up practicing eye/hand coordination in their sports. sheer repetition and lots of training sharpen this coordination.
soccer, as you mention, is less concerned with hands...unless you are a goalie, as i was.
perhaps it is not that soccer "limited" eye/hand coordination for melo as much as melo did not play sports that required a great deal of eye/hand coordination. thus he never really developed catching the ball, etc.
if so, then there is hope for melo's appendages. if not, then he better learn to head the ball into the basket.