Souths need the aim up in defence and need to have some cohesion from their halves. That's the main problem, that will continue to be a problem unless they correct them. Regardless of who they sign, they need to sharpen their defensive positioning. Also signing a center, fullback, winger is only good if your halves have cohesion, be aware of options and execute the best option for the play. If they fix this up, which they are very capable of then they will be a contender next year bar injuries. I hope they can go all the way.
On a side note what's the chances GI will slip on a Norths jersey and having a run in nswrl?