Hm, I'm rather hesitant here. What's the long-term plan regarding these experimental features? Will they ever enter a stable state?

Conceptually, I wouldn't say this is a good idea, since the two extensions perform different tasks. If it really creates problems, we could move this experimental code into a new extension, say MathExperimental perhaps?

I think it fits well to the MathSearch extension because LaTeXML generates content MathML which is required for the search index.

Ok, let's do it. Worst-case scenario: we move it back or somewhere else once these stabilise.