I think Castagna is a must stay in the team. People remember the odd missed handball or missed shot on goal but will overlook the constant harrassing, pressure, tackling and goal assists he provides. He directly provided 3 handballs to team mates that directly resulted in goals (his hands are actually very slick), he had 6 tackles, gets to the right spots & just makes us look like a tight, manic, pressured unit in the fwd line; i think he is pretty vital to our fwd setup and the ball does not come out so easy comapred to when he is not there. He does alot of the hard-working, grunt stuff that doesn't get recognised so much or appreciated enough.
Yeh his skills especially by foot can be very scratchy but i think he will start hitting the scoreboard soon, he had an interrupted pre-season with injury and i think even now is providing enough and will only get better. He's a bit of an emigma is old George but his positives outweigh the negatives imo. I'd be very surprised and dissappointed if George is dropped.