Circumstances on the ground, make Iran more primed for targeted strikes.
Imagine the unrest, if Iran’s primary refinery complex was hit (as part of an anti-nuke raid). A counter-revolution would rival that if 1979.
Persons twittering from inside Iran, are asking CNN to actually show what’s going on there right now (a march on the election HQ 30,000 strong).
I think you are right Israel striking now would destabilize the situation even more and might even overthrow the Ayatollahs Regime.
If Israel doesn't take full advantage of this destabilized state of affairs right now, their whole government needs to be fired.
They could force the ouster of Ahmadinejad and the mullahs with the precise application of conventional force against key targets.