High_Gravity
Belligerent Drunk
Hamas is allied with Iran, but it's hardly an Iranian proxy group (as is often reported). It wasn't established by Iran and its ties with Iran are relatively recent. It's kind of a enemy-of-my-enemy-is-my-friend-type situation.
Hezbollah is an Iranian proxy group (or at least was established that way). But it's also been around for so long and it's so entrenched into Lebanon that I think it would survive regime change in Iran. In Southern Lebanon, Hezbollah is the only organization that can provide people with basic services like police and hospitals.
I think your right that Hezbollah would survive but without its headquarters in Damascus and weapons, training and funding from Iran they would be weakened severely by that, the weapons, training, money and even personnel from the Iranian Revolutionary Guard is what is making Hezbollah the strongest armed force in Lebanon, take all that away and you are taking the fangs from the cobra imo.