Daniel Jacobsen, Nicholas Vining and David Baumgart have all kindly appeared on an interview for Roguelike Radio. You can listen to them talk about their origins, design decisions and their future plans here: http://roguelikeradio.blogspot.com/2011/10/interview-with-gaslamp-games-developers.html
I swear I could listen to these guys talk about nothing for hours at a time and it would still be entertaining. Great listen, keep up the great work over there Uh, both of you... Gaslamp and Roguelike Radio.