Perhaps it should also include a non-ligature way of displaying icons. In current accessibility practices, when you place a description after its image you are supposed to include an empty alt attribute.

So say you have social icons...

  ◈ Facebook

  ◈ Twitter

You are supposed to write

  <img alt="" /> Facebook

  <img alt="" /> Twitter

As to cue screen readers to not read out loud filename or the alt attribute.

In this case Symbolset works as the alt property of images, so you would do something like...

  <span class="icon">Facebook</span> Facebook

  <span class="icon">Twitter</span> Twitter

Which wouldn't be right.