Likely Candidates are Nonu & Muliaina for the All Blacks
Hard to say who will be up there in terms of the wingers because no-one can predict who will get gametime there. Could be jane, Could be Kahui, Could be Toeava, Or Guildford though he may likely be rested for the first game after a Huge workload in super15. Gear would be likely if he weren't injured.
For Aussie I'd bet on JOC again I think he was top try scorer for them last year.
Who knows for SA, so many of their backs trys are from intercrpts and from posession they score more through the forwards and guys like Burger & Spies. Habanna hasn't been a threat for a while and I dont expect him to score more than 1 or 2 trys maybe not even that if he's rested for a couple of games.