Here's where I'm at on my Dominance War piece:
I've only had the chance to put in about 3 hours total but actually I think my progress is good. I'm not going to render this to super-pixel perfection, because it's to be submitted at a pretty small size, 1000px square. I'm working at 3X that size so it will rez down nicely. It's gonna be a lot less work than the Artspace entry... thank goodness.
Here's the first progress shot, after 1.5 hours: