Missiles and drones shot from İran territory will be intercepted by the USA UK and France in the air.
Attack should come from Lebanon soil, otherwise it means nothing.
I hope you realize the potential magnitude of what you're suggesting and the subsequent repercussions that the civilians of Lebanon would be forced to endure if Hezbollah succeeded in a meaningful attack against Israel?
It would give the Israeli government all the "ammunition" they need to start an extension and protracted bombing campaign in Lebanon. That sounds like a lot of civilians that die unnecessarily.
I don't think a major attack by Hezbollah is a overly smart, unless the organization is willing to go "all in" attempting to eliminate Israel.