The error messages for <math> are currently treated only as plain text. This means we can't add wikilinks or tracking categories to them. It would be nice if the Mediawiki messages for Math were processed as true wikitext, like we do for Cite errors, for example.
This makes it harder to find and correct errors.
In the context of Bug 31442, which has resulted in a very large number of math rendering errors, it would be much easier to know the extent of the problem (and deploy work arounds, if necessary) if we could track which pages were suffering from the bug.
Even if 31442 gets fixed soon, it would still be nice to have an easy way of finding malformed math output in the future.