I agree whole-heartedly. It take a lot of time and effort to regain what you've contributed to a SG. It's a shame that it can be gone in an instant with absolutely no recourse or GM intervention against the actor. Disappointing to say the least.
I think air superiority is pretty vital. I'm at level 39 and my build is virtually identical. This guys rocks, but make sure you have a couple of respites with you.
I cannot change the interior color of the tails on the trenchcoat. I keep selecting black, yet it defaults to bright red. Made sure I was not in SG mode.