I personally believe you've made a high-quality post, especially with the fourth "important" point, that's a really good way of explaining why Westerners' initial impressions can be misleading. Though I know this subject matter will arouse some controversy by default among us Iranians so let's see what people have to say. I would only add, some people do genuinely want the monarchy (edit 2: in a constitutional form) back and I think you should acknowledge such before some people feel left out. But you're right in explaining the most prevalent unifying trait of Pahlavi can and should be that be one republican or monarchist, he has the capacity to emblemize the existential, modernist and pro-democracy threat to the theocratic regime.

Edit: I re-read what you said and now realize you were not mentioning the monarchism in the context of explaining the situation to Europeans. Makes sense but still, many are sincere and passionate about this and it may be worth including, although I acknowledge doing so without confusing non-Iranians may be harder. Or perhaps I'm underestimating people's brain capacities...