Actually quite a lot of serious by non-power-users do want this. You only have to look at a random persons laptop and see and the file names with "final versio

Actually quite a lot of serious by non-power-users do want this. You only have to look at a random persons laptop and see and the file names with "final version.docx", "final version 2.docx" "final final version.docx" etc to see this. They certainly don't want a console based solution but a cross between git and word style track changes would make lots of people pretty happy.