Ok so Lets assume everyone here goes and joins an FC and finds a static, etc, and they no longer pug. How do you expect the people who wants to *have fun* to clear the content they wanna clear and not self improve?
Here is the problem, which is assuming that people will stop doing PUGs just because they want to clear the maximum amount of content. That's what some players will do, but many will not, because they value socialization and casual fun over pure game achievement.