Problem/Motivation
In an issue in a different queue @dmundra figured out how to integrate Axe testing into our Nightwatch tests: #2857808: Automate Accessibility Checks for Core. There's good discussion happening in that issue, and I think a good step towards making it a reality it having an MR that demonstrates automated A11y testing is feasible in core.
Once we have the proof of concept, it'll be easier to discuss next steps.