I think it's a bit soon to say they've got "everything" but they definately are a team to watch out for next season.
When you have a superstars with the potential to amongst the very best in the league, and two guys like Jeff Green and Russ who could easily turn into All-NBA calibre players, you've got foundations and reason to believe it'll be upwards from here on out.
Doesn't hurt having veterans like Collison, Desmond and Krstic on the team too.
We'll see how they handle offseason moves..