I would keep Whacko Jacko. He struggles abit and isnt the smartest bloke ever but he is a bit unit and has a go. He was a late pick, and was always going to take some time but his upside. He was a rower i think, and one of his upsides was he was a real strong lad at 189cms and fit. I like that he' started kicking 60 meters also.
Give him another year at least.
That said he is not skillfull enough for a flank, and isnt our best tagger. He is not in our best 8-10 midfeilders.
He is in the same leagu as Edwards, White, Connors, Raines, Polo, Collard.. and i reckon all those have more upside. I even like Collins.
Deapth player for 2009 at best IMO