Is there any way to mess around with the UI without setting up the whole environment? I see a few bits I'd like to clean up but man that's a lot of bootstrapping :)
You will have to setup the entire environment. It will take a few hours to set everything up. I'll be happy to give you any help in setting it up. The documentation on github is a little out of date, so if you are interested I can update it for you.
As a start, perhaps you could open a new issue on the project's github page and we'll discuss the changes that you propose. Bugreports are just as valuable as patches at the moment. Good luck!