I think hats add distinction to pilots, but the problem with them is that most guys hate them and so often don't wear them. That defeats the "uniform" part. If I wear one I have to have it on in public because I instantly have bed head when I put one on.
Double breasted jackets don't look too good on those of us height challenged. I'm 5'9" and the only time I tried one on I said "Oh no."
Whatever we end up with I hope the policy is enforced. Our group looks bad. I think some pilots are wearing the first shirts they ever purchased and use the same "I don't have to pack a coat" leather jacket philosophy with their shoes and wear black athletic shoes so they don't have to pack any more!
If I were king I'd get rid of the leather jacket and hang anyone caught wearing Penney's pants and tennis shoes.