But still... some of the syntax we have now, not to mention the sheer breadth of verbiage, is insane. CSS feels like it's been groaning under the weight of all of this guff for quite some time now, and adding new obscure units and funny things in square brackets isn't really going to improve matters.
I had somehow missed that your gripe is with the syntax - I fully agree with you on that! CSS definitely feels kludgey, especially for larger/complex apps or sites. I now think of real CSS as a target that my build system generates as I mostly write in Sass or LESS. I find those superior to vanilla CSS in maintainability and composability.
CSS/HTML is a complicated mess. But anyone who thinks it used to be better needs to take off the rose tint glasses.
I'm still not sure if we're better off yet. . . .
I'll take background in CSS over tiled 1px-wide gradient background images any day. The responsibilities being piled to CSS keep increasing, but I believe it is being done in good faith to at improve/formalize what people in the wild are already doing with hacks. Remember DHTML?