One of the most important things such an interactive IDE such as light table can have, especially when dealing with functional programming languages such as clojure is a way of showing recursive processes (yes I read SICP and it's awsome)

A way I suggest showing recursive processes is demonstrated on this website (roll over the text):
https://community.schemewiki.org/?sicp-ex-1.10

The only problem is that it won't work for functions that output complex data such as HTML or nested record structures.