"Most interesting split" Vis

[Birm]

This is a long term item (read: not related to any current/upcoming deployments), I just think it could be cool.

Use some method (svd?) to determine which split may be most "interesting" and show that. This would likely change on each filter event.

E.g. initially, "Location" is the most descriptive single field, but after "age" from x-y is selected, now "type" is more descriptive, so show that instead.

Still not entirely convinced this is a good idea, but we'll see.