
It's looking better & better, the enbroadened chest gives a good bulky look.
As for an additional pivot, it migh come in handy for the transformation
(considering that the shoulder joints cannot flip the arms against the chest) and improve posabillity, eh?
Considering that you plan to use a modified form of that Omega Prime head,
well, will you remove the partial facemask,
turn it into a closed one or keep it as is?
If it's going to be a closed mask, the head might look better witha slight modification to make it look more like a knight.
(it's a bit too bulky for a ninja, eh?)
Whilst not suggesting that this should become Nightmare(Soul Calibur series),
it mightn't be a bad model for an evil knight if you want this bot to be a con.