I think leather is the smartest but I'm willing to try a breathable fabric. I think the arm pocket should be on the right sleeve not the left so I don't have to change hands from the cyclic to get something. The pen pockets should be larger, at least one anyway, to accommodate my nice Zenon torch, 4" x 1". I think the epaulettes should be popper closure as velcro seems to stick to the shoulder harness. I also like the idea of a pocket on the outside for a mobile phone or radio. Also perhaps a couple of high viz stripes. Somewhere for sunglasses? Asking a lot of a jacket but he did ask.
Regards,
Chopperpilot47