I just installed the Nancy.Templates for Visual Studio. Before this, creating a project for Nancy has always been a bit of a pain - adding a mvc project and then removing a whole bunch of crap you don't need. Way too much fiddlery required.
What really got me was the minimalistic set of dependencies:
Compare that to an
empty MVC4 project:
A Nancy.Hosting.SelfHost project would have even less dependencies. I think this is the key to true RAD - less cruft to get in your way.