As I’ve also written elsewhere in the forum… I have no problem with Hayden Christiansen appearing at the end of ROTJ. Superficially, he’s better to look at. And perhaps it is also how Anakin sees his best self. Just a thought.
I also have always been confused (oh grammar) about whether the Jedi in the title refers to a singular or plural. I think if we just take what we see in the movie, it feels like it’s singular, since the only Jedi left standing, so to speak, is Luke. I never got from the movies that there was a great plan to restore/reform the Order, though I take it from what I’ve heard about post-ROTJ EU that it indeed happens. But I don’t think the movies make that clear.
Also re: Salma Hayek and Frida - I think they were going for more how Kahlo painted herself (to go with the transitions in the film between the action and Kahlo’s self-portraits) rather than the photographic evidence we have of how she looks. Examples:
Frida Kahlo (photograph)
One of my favorites of her self-portraits
And and image from the movie starring Salma Hayek