Like I say, if that was the solution it would have worked already. We have several iterations of CSS at this stage each solving the problems of the previous but if you want to develop a layout that people can actually use you still need to support the old browsers and you have to get the vast community of web developers who are “happy enough” with CSS to get on board and learn your toy alternative. If you want something more advanced there are plenty of well established macro languages atop CSS that you can use , much as you don’t need to know assembler to write modern applications