Data exploration like this is very interesting, and a problem that's far from solved - so I'm excited about this.
A small UI nitpik: one thing that struck me from the video demo was that your drag targets were on the opposite side of the screen to their source. That seemed a little less discoverable and more involved to use than if they'd been closer.
A small UI nitpik: one thing that struck me from the video demo was that your drag targets were on the opposite side of the screen to their source. That seemed a little less discoverable and more involved to use than if they'd been closer.