I was thinking yay that sounds like an awesome data visualization platform, that would be great. Until I got to the “just kidding” part.
You are right, all this information is readily available. And we would be really naive if we think that no one is collecting this yet.
You, or someone else, should build this, such that it is clearly visible for everyone what data is available. And not just visible to the select few who builds their own closed data mining systems.