^Agree with that - I think Smith might be better off concentrating on First-Class cricket for the moment. ODIs were good to give him a taste of international cricket, but now I think he needs to hone his skills a bit more for Test cricket.
Just have Doherty/Hauritz + Clarke/D.Hussey as your ODI spin in future. There's really no need for 2 spinners in Aussie conditions generally. If they want more of a bowler at #7 try Dan Christian, and get Watson bowling a bit less. Or go with 5 bowlers, especially if you play Hauritz as Johnson, Hastings and Hauritz are all pretty handy. That might be a good ploy for T20s.