The Meet-up notion of having people request to talk and try to find which items are important is at best a joke. It clearly points to the fact that they have no one on staff that actually understands UX (user experience) and the process of finding answers to solve the issues. Or they may not wish to spend the costs involved for proper UX discovery and it’s methods.
PS: if the front end dev puts nothing or image of logo for a picture of a company logo what is your overlay for tools going to do?
The problem lies in the hands of those that don’t even know of what it’s for and how to layout web pages for those with disabilities as well as those without.

There are a great number of research documents for the USA government (tax dollars at work) and they are 100% great.

Just an example of what the WP People were saying; what if there is an old person that has difficulty seeing and is also has a little problem with hearing, your overlay sounds as if it’s not set up to handle that.

Hope this helps!