Terrific.
Presumably it is part of your plan, but I would like to put a plea in that obvious and often used groups like the EU should be one-click accessible rather than needing to be created as a group - just thought I would clarify!

I'm in total agreement. The only reason I didn't include the groupings that BP has in their dataset is that I'd like to show which members of the group are importers and which are exporters instead of just coloring the entire block either red or green.