I wholeheartedly agree with you that we should not use Mathjax on this site. However, I think it would be great if we are able to use the stylised LaTeX logo (and TeX and XeTeX ... as well). For example the title of [the LaTeX Wikibook](https://en.wikibooks.org/wiki/LaTeX) is a very nicely-stylised logo. Of course we won't need Mathjax for this. A quick Google search gives me [this](https://stackoverflow.com/q/8160514) or [this](http://nitens.org/taraborelli/texlogo), etc.