And on a related note over Christmas I started a project to implement a new parser-analyzer engine for Lookbook:

https://github.com/lookbook-hq/booklet

Still very early days (it's very much *not* ready for public use yet) but I'm excited about its potential, both as a more flexible, extendable, sane(!) foundation for Lookbook and as something that will hopefully make building things like Murilo's visual tester tool much more straightforward.