I got my ergodox a few days ago and refined the Microdox layout. Microdox is a minimal layout using only 27 keys per hand. It is Workman based but it can be anything you like. V1 had an extra layer for qwerty but I removed this in the interest of simplicity. Its easy enough to add it again by replacing the +L1 key with a ~L2 key and making L2 QWERTY if you like. Anyway here it is. There are a bunch of subtle refinements over the original. The media keys wont work unless you use TMK (or make them F keys and map them in software). I wish there were a way to make ctrl-key pairs in the configurator. That would solve everything.
http://goo.gl/Ld2arVThe main differences are:
The inner direction keys are more intuitive
Ctrl+Alt+Del line up for easy pressing
I included some extra keys for programming and grouped them together.
~L1 and Shift are next to each other in a more ergonomic way.