While your suggestion appears meaningful, I argue it is not; it's just hindsight. Very often a seasoned developer has a multitude of skills; if I need to be specific, I cannot list them all. Unless I use tens of pages - then the CV is too long. The most important bits may be very different for different companies and positions - but it's not easy to tell from the outside, especially from a job application form which may be very vague and indeed just list a number of technologies.
Also: it's very hard for people to compress their lives in a CV.
Recently, when writing a job ad, I usually ask something like:
"send us your CV, or a link to your blog, or write something about you, what you like to do and what you do well, tell us something great you did in your career, or just send us anything you think it's relevant for us to understand your value".
If you just ask a CV, you just get a CV.