It seems like dedicated psu for itx boards is becoming the norm. The first one I think that had some dedicated psu is zotac. With asus having a dedicated psu for their mboards the other manufacturers will soon follow. This would be nice since we would no longer need to find a replacement psu for our itx cases (itx case psu's easily fry). I would buy one, a really small one to replace my old download box.

So could you post some pictures of your rig if ever it would be finished.