I think Captain Enoch's chest backplate is more like a tank troopers since the back panel seemed larger a normal stromtrooper's and has different greeblies than the pause and record icon.
Yeah, i think at the very least they filled it in and added different greeblies. I'm going to end up making those unique pieces at some point just because I don't want to mess up my classic trooper armor.
it helps that I've already built like 30 variants of stormtroopers so I was able to mix and match my earlier templates rather than starting from scratch.