Nicely done and interesting results.
Not sure how practical the suggestion is, but perhaps some tips/comments about how to interpret the report would be useful i.e. what should I look for? what "red flags" should I worry about? what does/should a well done (
SEO'd) site show? etc.
Or, if nothing else, some suggested links to sites that offer such answers could be incorporated.
Best of luck with it. Ought to prove a popular/useful tool.
Duncan