I used the excellent data that you all have been gathering to write up an analysis of the Wave 3 meta and attempted to see what lessons we can learn for post-Wave 4. It's posted at A Few Manuevers.
http://www.afewmaneuvers.com/_/afm-articles/x-wing/meta-analysis-regionals-results-and-wave-4-r178
Let me know what you think. Thanks for taking the time to report and collect the data. It's a real boon to the community.