It would be very nice to know if any of the most reported ERRs, WARNs, FIXMEs etc. from the _previous_ run is now gone (in other words, that it has been fixed/implemented)
I don't think that's possible to determine from the statistics. Just because we don't see a message, or don't see it as often, doesn't mean it has been solved. Things that have been solved may still appear if people are still using older versions.