I'll just repeat my 20 year old whinge in the forelorn hope that PTC are monitoring the site.
I only have very occasional use for a dot or over bar font but its frustrating when I do. I've been waiting for 20 years for the authors of Mathcad to create a set of math fonts with dots, over-bars for mean etc.
It would be easy enough to diy such a font but it would end up with as a dogs breakfast as soon as you transmitted files to other users. The cost to PTC would be a few dollars. The benefit would be that they could then finally claim that Mathcad is a complete mathematical tool without the work-arounds that still end up with mickey mouse presentation.
(I wouldn't spend money on a new version on Mathcad just to get the benefit - I've spent enough on Mathcad for what should have been in the version 1.1 which I purchased 1987/8 or thereabouts).