Hey there Kyle,
Thanks for bringing this to our attention! Yes, you are very right regarding how some of the 5th NCOs would have the gold braid on their jackets, so when our character artist is next able, they will be sure to add this as well for both historicity and variety-sake. However, we will be measured in how many would have it due to two different factors.
First, we should consider that with these uniforms needing to be privately purchased, a jacket of this sort could easily cost almost $50 to have made for them,* which was several months' worth of pay to pitch for but one jacket. That being said, uniformity and pride in one's unit would also be a factor in the decision to save and buy one. Secondly, we should also consider the timeframe. After severe losses at both Gaines' Mill and 2nd Bull Run, we would be speaking of many battlefield promotions less than a month prior, and a total strength of 208 at Antietam.** As such, few of the new NCO's would have had the time to get new jackets or have their jackets redone, and as such would probably have done little more than this Corporal was able to do for his jacket:
201402A36_uniform-thumbnail-1200x1200.jpg
As said, when able, we will be happy to include this added bit of variety for some NCO spawns, but I am happy to report that the uniforms already in-game are not as lacking in their historical basis as would otherwise be claimed. As always, however, please don't stop bringing up one's possible concerns, as we are happy to look into them and see what can be done!
* Price estimated off of prices tabulated in
Life in Civil War America. Pg. 153.
**Carmen, Ezra.
The Antietam Manuscript of Ezra Ayres Carmen. Pg 59.
http://www.8cv.org/carman/EzraCarman.pdf