When it comes to rounded corners, I think the CSS3 solution of both "border-radius" for simple cases and multiple backgrounds per element will solve a fair few

When it comes to rounded corners, I think the CSS3 solution of both "border-radius" for simple cases and multiple backgrounds per element will solve a fair few problems. Some of my particular problems with CSS would be that it's insufficient for styling a document, the idea is fine, but to be able to do any advanced css you'll need to muddy up your markup with additional elements to hold styles. If that were fixed, then it would at least be reasonable, and sure it's slowly moving closer to it. Aside from that I personally dislike the oversimplicity of the style of CSS that leads to difficulties in creating stylesheets that are easy to navigate what with the lack of structure (over a couple of years of fixing up a design stylesheet are rarely that pleasant to look at), having some basic support for variables and calculations to more easily create complementary colors to your document styles also be nice, but eh. See if I get killed for those opinions.