Yea, I would say a lot of this particular design should ultimately be poly-modeled, rather than sculpted, especially the art deco trim-type stuff. The geometric forms are part of what make this visually interesting, and you would definitively have an easier time accomplishing those nice, clean plane-breaks in a traditional modeling app. I mean, by all means hash it all out in zbrush, but I would suggest some clean up afterwords - primarily for baking purposes, but also just in terms of saving urself the trouble of obsessing over polishing the hell out of everything.
edit: Also, just a quick critique of the concept: the ovular spiraling protrusions originating from just below the wings seem to defy the angular rules you have implemented throughout the design of rest of it. If you could introduce some corners or something into them, it might help them not stick out as much, but at the moment they are also in this awkward directional middle ground between the wings and base. I hope that was clear, but I'm just trying to convey how that particular element seems out of place.
I would also suggest tweeking the emblem in the crest of the angel's breastplate a bit. Just because right now it strongly resembles an inverted mass effect relay, so perhaps adding some bulk to one end of the emblem or something to that effect, will prevent that association. I'm not sure if it was apparent to other ppl as it was to me, and really, it doesn't appear that way in the model thus far anyway, so it may be fine. But I just wanted to point out that others may also make that correlation especially if it is presented as a focal point.
Last edited by Jeremy Tabor; 03-16-2012 at 02:54 PM..