I can't really comment on the Australian and New Zealand teams, so I'll look at the SA conference.
Sharks.
I think the Sharks are over valued. On paper they look good with real strengths and few weaknesses, but I'm selling. Over the last couple of season's they have lacked identity. Last year they ended up on the right side of a couple of results that could have gone either way (like the Force), but they can't continue to rely on things going their way.
Prediction - 50% percent record that sees them missing out on the play-offs.
Bulls.
Maybe, maybe not. No team in Super rugby has more defined style of play. It is style that would please the Sydney Uni fan (forgot his name, sorry) immensely, I just don't know if it suits the squad they have. On their day, they can beat any side, anywhere in the world. I think they will continue with some really average players (McGeyvor, Kruger, Stegman and Visser in particular) and it will cost them a couple of big games.
Prediction - ~50%, but above the Shark by virtue of more bonus points. Wild card spot.
Stormers
I'm biased, shoot me. They don't have the star power of the Sharks or the Bulls, but they play a style that suites their squad and the squad is better than they appear on paper. They can carry injuries better than the Bulls or the Sharks so unless they go into fourth or fifth choice in any particular position as they did in 2014, they should be OK. Quality at flyhalf remains a major issue though.
Prediction - Conference winners, but not good enough in the halfs to really challenge for the cup.
Lions
The ginger step child of the franchises. They don't have any star players (Whiteley, excepted maybe), but they have style that works for them. I think they are going to be the lovable losers that the Cheetahs used to be this season. Their naivety against the canes were plain to see. Expect them to improve throughout the season.
Prediction - useful spoilers. Clear of bottom, but not by much.
Cheetahs
Not good enough. They lost too much quality and their coaching is truly awful. Might do ok against the other strugglers, but bottom three at best.