Yeah for web apps that would be ideal, no harm in displaying shortcuts for everyone. I'm sure Atlassian do this for a few of their tools.
One thing I do wonder though is how it would differ from just making sure your website is accessible via tabbing? or is it just a shortcut to stuff so you don't have to tab through the whole site to find what you are looking for
Yeah for web apps that would be ideal, no harm in displaying shortcuts for everyone. I'm sure Atlassian do this for a few of their tools.
One thing I do wonder though is how it would differ from just making sure your website is accessible via tabbing? or is it just a shortcut to stuff so you don't have to tab through the whole site to find what you are looking for
Yes, it is a shortcut to empower users who rely on keyboard only to use your application faster. That's accessibility: empowering users.