During my career, I was rarely asked to implement accessibility improvements, and even when I did, it was just to add a missing alt or add aria labels. I never had a chance to work on an accessibility feature in order to really change and improve the UX for people with disabilities.

So my question is primarily for people who rely heavily on accessibility features, but also to anyone else who wants to share any experience or advice on working on significant accessibility improvements.

The full question is:

Are you satisfied with the current state of accessibility on the web and what can we do to make your browsing experience easier?

and

How to approach the planning and implementation of accessibility features of a website or a web app?