Adding headings to <section>

W3C: “Section lacks heading. Consider using h2-h6 elements to add identifying headings to all sections.”

Has CommonMark considered adding headings to <section> as part of the spec? I ask because when checking my site for errors on the W3C’s validator, I consistently get warnings relating to the lack of a section heading for a footnotes section:

For example, this code

<section class="footnotes">
<ol class="footnotes-list">

returns a warning on validation check, because the W3C recommends every <section> having an associated heading:

The theme of each section should be identified, typically by including a heading (h1-h6 element) as a child of the section element.

So, using my previous example, something like the following would be better

<section class="footnotes">
<h3 class="footnotesheading">Footnotes</h3>
<ol class="footnotes-list">

Note that the actual heading could be set to display: none via CSS, so that it doesn’t show in the stylized version of the webpage.

This is mostly a question of semantics. But semantics are important!

Just wondering whether the committee (?) has discussed this as of yet.

Common Mark currently supports neither (mandatory) sections nor footnotes. Conforming implementations are not forbidden, though, from outputting sections with headings as far as I can see.