I think Div 1 is in the best shape it's been in in a long time. I can't pinpoint a weaker club this year, I think most clubs will be competitive across most games, and I wouldn't be surprised if they opt for no relegation / promotion at the end of the year, though maybe the Petersham / UNSW resurgence will force their hand.
Newport APPEAR ready for the challenge, Lindfield will be better for last year's experience and ran home strong, and then Colleagues, Mosman, Waverley, Blue Mountains, Hunters Hill and Drummoyne could probably be considered 'safe' stalwarts in the Division nowadays.
I guess you never really know until you see who's who in the colder months middle of the year.