What would this look like?(no pun intended) Like a web site that documents accessibility issues for common web sites and software? Or a guide that walks through a typical development process for a blind dev?
I will suggest you start a blog somewhere and, initially, just kvetch about things that you find bothersome. If you can get any kind of feedback at all, that can help you figure out what your value position is. You only need one person really engaging you to make a big difference in your understanding of what other people most need from you.