I'm an other beta tester of the Samplitude Access Project and coder of the our new solution that we will release it as soon as possible.
First of all, I totally agreed Pete's comment about "accessibility" and "useability". especially Steve Spamer and we are not only creating accessibility solution for Samplitude, we are also making everything more easier for end-users.
Yes, unified accessibility solution will be awesome, but I couldn't find any source/material/script/application on the internet about other accessibility solution that mentioned in the first post. So can we say that "they are accessibility solutions for all users"?
I believe that other friends will explain everything more better than my comments.