I'm sorry that we've not made any real progress on this since I posted last. I'd love to say it's firmly on the road-map, but the truth is I'm struggling to prioritise it over other work. If you look through our UserVoice suggestions you'll see it hasn't yet attracted much interest, at least compared to some other ideas:
http://sqlmonitor.uservoice.com/forums/ ... ilters/top
http://sqlmonitor.uservoice.com/forums/ ... -reporting
The suggestions list isn't the only thing we use to choose which features to implement, but I don't think we're likely to work on this issue in the first half of this year.
One of our developers wrote an article recently explaining a bit about the schema. I know that's a long way short of what you'd like to see, but hope that it might be useful:
https://www.simple-talk.com/blogs/2013/ ... ta-part-1/
Product Manager for SQL Monitor