Comment by chime

Parent selector is cool but I've needed it at most 2-3% of the time when designing a site. As of now, it doesn't appear to support things I really need in almost all mid-large site layouts: variables, mixins/functions, operations, and namespaces. This means even 5 years from now, I'll need http://lesscss.org/ because browsers with CSS4 won't support variables. How does one go about suggesting to W3C that they should support variables in CSS4?