Extra feature idea for accessibility checker tool (people with visual impairment)
<p>i am building an accessibility checker tool that will check only the accessibility issues which are related to people with visual impairment. It will use WCAG 2.0 rules. What my tool can do? 
It can do..
1. check for issues and show the list of errors found in the page. 
2. how to fix them (show example how to fix errors) 
3. My tool will rate the page depending on how many errors are there.</p>

<p>All other accessibility checker tool has same kind of feature as mine. I am just wondering is there anything else i can do that will make my tool stand out among the rest. 
Is there any possibility of retro fitting?
thanks</p>
