Threadromancy!!! My thread!! No guilt

Wow, been a while. Works been manic, been moving house, Christmas and being distracted by 40k is not really a good recipe for Specialist games!! Hopefully that will change now (ish).
I've started to make some more Inquisitor scaled terrain (it's for a specialist game so that counts right?). The first up is a warehouse (racking systems and all!). Not sure what it's meant to be containing but most likely fuel and weapons storage because that makes games more interesting

All the doors on hinges so they can be opened.


Storage.


I've also started work on yet another Marine. Mostly because I find them fun to convert, easy to paint and I had the parts knocking around my bits box. Unfortunately those parts were in pretty bad shape and he was missing and arm and a leg.


The idea behind him is that after he was severely injured and forced out of active line duty he was selected to act as a delegate for the chapter. He now goes off to create and strengthen ties with other imperial forces.
So, I need ideas for....
1] His name (he looks fairly Roman?)
2] His chapter (preferably not a well known or old one)
3] Ideas for his bionics because I'm not happy with his arm
4] Should I add a shoulder pad to his left arm? I kinda like the un armoured shoulder look. Plus it makes him look like less of a combatant. Well, as much as an 8ft tall power armoured killing machine can look.