Exploring the Jedi Knight class meant delving the Jedi Code and how it works in theory vs. how it works in practice. What happens when you take that code and mix in a hefty dose of "what if?" is a recipe for all kinds of possibilities, and Karpyshyn is having a great time exploring them. His experience writing the dark side gives his version of "what if" a little edge, exploring thoughts of renegade Jedi Knights who are willing to bend the rules for the greater good.
It's a fun read, with a great look into Karpyshyn's thoughts on the class -- you can take a look at the full entry on the official site.