Looks really cool! I was using [slate](https://github.com/jigish/slate), but it seems to be abandonware.
I have a couple of things I'd like:
- A [Divvy](http://mizage.com/divvy/)-style grid. When I used Divvy, this really made a dramatic difference in my window management - Rich Spaces/Mission Control support. It'd be great to send windows to certain spaces, make spaces for windows, etc.
I'm excited to write a Hydra config for myself, it seems great!