I’m not so sure, I think people will be surprised how many would welcome a regime change, none more than the oppressed women
There has been talk of a 'colour' revolution for a while. One of the interviews I saw today, and I accept that it's hard to put any kind of credibility to much in this day and age, was an Iranian woman, not wearing any kind of head-covering, demanding that Iran now very much develop it's own nukes now.
Again, any and everything can be, and potentially is, astroturfed so you cannot put much credence on anything but I suspect the situation in Iran is perhaps more nuanced than we are led to believe. All I do know is that as a country with massive reserves of oil, gas and a host of other minerals much in demand, then there could be a lot of interested parties in perhaps seeing a more user-friendly regime installed.
On a personal level, always rather liked the few Persians I have known. Tend to be mad as badgers but always interesting people.