What science needs, I believe, is not another tool for making TeX more usable for information interchange, but a simple (much simpler than LaTeX, whose complexity and user experience is terrible), web-oriented standard language for typing in libre scientific and technical documents that browsers would support (or it can be translated to valid HTML+CSS seamlessly). Web documents are cheaper and more accessible to people, we should concentrate on those. I don't know if there is usable language and platform of this kind already. When we'll have that, tools for converting web documents to other less important formats such as paper-printable ones can be created.