Honestly, even if he is cheap and South Australian, Brad Hill shouldn't be retained next season. Not only is he unable to provide consistent output, his turnovers and missed layup attempts end up costing the team rather than benefiting it.
We have our 5 and 4 positions, what we really lack is a decent 3 man. Holmes can play the role but I'd be looking more for someone who can get to the ring, Holmes is more of a defensive presence. Obviously Newley would've filled this role but he's not available.
A backup 5 other than Cooper would be nice, I like Coop's shot blocking but I'd prefer a better finisher around the ring, someone you can get the ball to in the post.
Retain Balls, Burston (unless Luke is available, but I doubt it), Ng, Herbert, Holmes. Find a better backup big man or 2, better PG (Gilchrist is skilled but I don't like him running our offense), and a scoring backup SG that could possibly play the 3 aswell (this is probably what they want from Hill, unfortunately I don't see him with the ability to do it).