I'm making progress, and I had a few more files posted a couple of days ago, but then the forum crash took them away... I figured that it is probably best to wait until everything settles to post new files in order to keep myself from reposting them 37-ish times. :lol
About the shield, I wasn't too happy about it either. I have remodelled the chest a bit, and it was one of the things I changed. I also added a back piece, since I found a brief reference that the rear part of his armour looks just like the other guys, just with his yellow plate over it. I'm not saying it's perfect, but it's better than backless. The chest looks like this right now:
The height of the sheild hasn't really changed. The difference is that I gave it a downwards slope at the back part, and changed the angle and length of the yellow plating. The chest plate itself is more compact, therefore the shield looks bigger in comparison. I'm still tweaking it though, and have a few other minor details to change before I want to release it again.
Anyway, the files that are mostly done are the chest, gauntlets, shins and boot caps. I'm making good progress on the upper arms as well, hoping to have them done in a few days. I'm going to be modelling the thighs, cod-piece and the helmet as well, just to have a suit modelled entirely by myself, but for the thighs and cod-piece regular mark VI should do, and raziel's helmet would definitely work.
Oh yeah, and the gun will be comming too eventually...