How important does everyone feel that equations are here? Other communities like physics and math uses MathJax, which will render equations typed in LaTeX. That has to be added to the site code, and I admit I do not know how this is done.

As a PSA, I use the quicklatex site when the MathJax isn't available. You can paste LaTeX there and then it will produce an image with a URL, you can use the URL directly to put the equation in your answer. It's certainly better than writing it out in plain text.