This is the direction in which I think I will go. Inner elbow relief. A minimal collar inside an oversized aramid neck hole. Rounded armpit vents bisected by a zipper vent. Articulated rolling cuffs. Cosmetic pauldrons to emphasize the shoulders. A gray and black color scheme.
No collar. Gray color scheme.
I've taken the v1 jacket design and started playing with the collar some more. Here I am experimenting with a collar that reminds me of a space suit helmet ring.