People dont realize it takes 1.5 hours just to fly from Israel to Iran, another hour to go from northern to southern Iran, add return trip and aerial refuel its 4 hours just on transit per sortie.You got it backwards I think.
They made a bunch of organization changes to delegate launch authority since the 12-day war to make sure a sneak attack doesn't cripple the ability to launch missiles. So that's why they're able to launch within hours of the decapitation instead of being paralyzed.
Instead of the 12 hr delay last year.
But that comes at the cost of large coordinated salvos.
It means they learnt the lesson of hiding the launchers and spreading out the attacks to minimize attrition from airstrikes.
Launching in single volley will increase chance of penetration but not ideal since it also allows Israel to concentrate their sorties. Launching contineously from random locations hundreds of km apart throughout the day forces continous sortie and a lot less jets on station making it much harder to take out launchers.
This all hinges on the missiles being able to penetrate AD with much smaller numbers, but that is evidently the case.



