Well, it's a great idea to start, but the thing is, since steam isn't generally the most accessible for totally blind players like myself, not many blind people have steam accounts to begin with. Since they most likely won't have accounts, they won't be able to provide their input. I think, you should post links in the body of the steam post to /r/blind, /r/audiogames, and audiogames.net. Also, I don't mean to self promote either, but you may want to add my Youtube channel into that list as well. I play a bunch of different types of games. It would be a way to show sighted people what games are very playable, and what games we struggle with. I hope this helps.

Here's my channel: https://www.youtube.com/channel/UCoZujToINVP7xax9BTc7s2g