I know that this has been discussed in other posts, but I would like to see MathJax, or equivalent, enabled on TeX.SX.
The arguments against seem to be that MathJax etc don't support all of TeX and that on this site we actually want to see the code, but I don't buy this. Currently to display the "raw tex" input we type
...raw TeX... or we indent the code. On the other hand, MathJax only operates (or could be made to operate) with the different markup of $...raw TeX...$ or $$...raw TeX...$$.
As far as I can see there is no conflict in having MathJax convert basic TeX commands such as $\alpha$ to something that is friendlier to the eye --- clearly, we won't want to be able to display arbitrary TeX commands this way -- and using backticks and indentation to display the underlying code. Why can't we have the best of both worlds? Especially given the comments about beauty above!
Judging from other posts, mine is a minority viewpoint. That's OK, I am happy to agree to disagree.
latin modern roman,
latin modern sansand
verdanarespectively. The results are here: jalf.dk/texoverflow. Note that I don't actually have Helvetica installed (and most users won't), so it looks like it falls back to Arial by default :(