Hi Holly! That's a great idea to suggest accessibility updates.
I'm surprised that Canvas and other LMS's do not have built-in accessibility checkers. We haven't been able to install UDOIT yet, so I'm trying out the accessibility plug-in demo on the homepage of TinyMCE | The Most Advanced WYSIWYG HTML Editor
The Rich Content Editor in Canvas uses TinyMCE, so I wonder why Canvas doesn't also purchase the plug-in and use that as a competitive advantage!
Yes! Any suggestions would be wonderful. You can also use the https://community.canvaslms.com/docs/DOC-1330-how-do-i-create-a-new-feature-idea?sr=search&searchId=... to submit "official" ideas.