The only way that enthusiasts can resurrect the classic Persian is by creating a new breed called the Iranian Longhair or something. I should hope it is. Personally I'm proud of my appearance because it is closer to the original Persian, just look at this last century's etching by the artist Landseer. And, frankly, we look better. I'm not saying that Extremists should be eradicated completely, since that would be genocide.
Humans have to complicate things.
The standard for the Persian says 'short nose', a vague description if there ever was one. So, of course, the nose, under human influence, is steadily becoming shorter and shorter with every generation of Persians. I believe that it's around time to stop. Thankfully, this has started in some European countries. Germany, one example I can think of, has passed laws forbidding the breeding of super-extremist Persians because it is not healthy for the cats.