I find it a bit peculiar that you post two such similar posts within such a short time span.

Anyhow, I answered in the other thread, saying that 5 is a huge thing here.

See also this post on this topic:

Another problem is egalitarianism. The system I am sketching is in many ways more hierarchical than today's academia - some people would focus entirely on the hardest and most prestigious tasks, whereas others would have to do more mundane work. I also think that this should be reflected in greater differences in pay (if nothing else, universities would be more reluctant to waste talented people's time if they had to pay them huge salaries).