Visited Mori Museum in Roppongi last week and loved the idea by Maruyama coffee of Gacha Gacha Coffee.
Actually, the interesting part was not the Gacha Gacha, but the self service system that was implemented there.
After one selects his favorite coffee (or Gacha Gacha machine), and then move it to a grinding machine and a pour over machine.
Love it, and will be interesting to see if will be implemented in other places.
Or maybe actually it requires more man power and effort than standard Cafe