I'm a map developer, strictly competitive duel. Studied for a good part of 2012 and 2013 and finally began work that summer, but I never finished. Life got in the way. It's my top priority once I'm on my feet, but at this point anything I release is too late and won't make it into the competitive pool.
I have plans to write a treatise on my design studies as well. There are many good resources out there, but none are comprehensive or amply specific. I still intend to follow through with my plans. I love Quake too much. But don't expect anything anytime soon.