Its difficult to escalate further except perhaps targetting large gatherings of regime fanatics or nuking them.
I mean, we started by killing their Supreme Leader, much of his family and other security/military chiefs.
What's destroying a few missiles and missile silos after that? Destroy them all, their weapons factories, drones, all armaments, bomb them back to a peaceful mainly rural economy.
Israel are also destroying the financial support of Iran and its proxies in Beirut, their banking buildings presumably.
All good targets in my opinion.
This evil Iranian regime ought to be wiped out. They employ snipers to shoot women who are peacefully protesting on the street. They publicly hang homosexuals.
You can't negotiate with these Islamic anti-west fanatics any more than we could with Hitler.