I guess if you are trying to use Light Table as "the uber clojure IDE" then it was never a goal for Light Table. Intellij Cursive is probably a better editor for that. Light Table's aim was for a form of interactive programming. Anyway, using an editor as an end user is very different to just playing around with its source code, although I applaud that you have done that. I will look into "Self" some more as I don't know enough about it. Do you have some good links on Self to get me started?
You should watch the videos on the introduction page and play a bit with the system, it's interesting to see how much interactivity and liveliness was already achieved in the 80s/90s,