The last great hooker we had was probably Danny Bud but players of that calibre are so few and far between and when they are that good it's almost impossible to pry them away from the NRL.
The true Cameron Smith would obviously be great but really can't see why he would come to SL let alone us. Hodgson would be great but he isn't leaving Canberra. Luke would be great but it does feel a bit like his agent is playing the game to get him an NRL contract.
Realistically we are looking at taking a risk on an Aussie hooker (memories of Beau, Seggy), getting an average English hooker but we just let one go in Lunt who likely would have been cheap or throwing Johnson in with Dwyer. I'd hate to see us blow Johnson up by playing him too much too early.
Long way of saying I don't see us really fixing this problem position anytime soon. Better to get someone who can pass, tackle and take the odd kick on the last and focus on other areas while we pray Johnson is the real deal.