I largely agree, but:

Thought: Something we could do to make the world a better place is to use technology to upgrade every man's body. Make most men taller, more muscular, leaner, etc. Men who currently have relatively less attractive bodies will get a larger upgrade than men who have relatively more attractive bodies to make it fair. But make sure there is still variety in what men's bodies look like.

You don't even need that much technology -- part of the reason why the average man is less attractive to the average woman than vice versa is that the former isn't even trying.

And I don't think either gender would be uncomfortable with that scenario.

Given the backlash against PUA I wouldn't be entirely sure of that, even though improving appearance might be less taboo than improving behavior.