I think that the BF1 devs did really well when designing soldiers; each class has common design principles that mean you can identify them from a distance fairly reliably even without spotting them. However, I have a few problems with specific aesthetic choices on some teams. The problem is, all of the mods I could find that change these either put focus on ‘historical accuracy’ and neglected the old class design philosophies, or simply made aesthetic choices that I wasn’t super happy with (most often they messed with the elite kits to add or remove masks that have an actual gameplay effect, or would remove certain characters that I liked such as the Russian female Scout or the British Sikh Medic). 

The full list of changes is as follows:

The German Scout gets the German Assault’s head.

The German Cavalry gets the German Medic’s head.

The German Support gets the German Cavalry’s pickelhaube helmet instead of the dumb metal skullcap.

The American Support gets a basic helmet from the American assault replacing his knight helmet, and also gets the American Cavalry’s head to fix a shadow issue.

Ditto for the Austro-Hungarian Support’s similar knight helmet, swapped for the Assault’s helmet and their cavalry’s head for the same shadow issue.

The American and Austro-Hungarian Sentries get the knight helmets that used to belong to the supports. Everybody else still uses the stock Sentry mask (plus a Brodie helmet for Allied teams in Version 2.0).

1.1 Version Additions:

Fixed the Austro-Hungarian and American Supports getting their old helmets back when they put their gas masks on.

2.0 Version Additions:

Added a cut officer’s cap to the German Medic to make him easier to tell apart from the Scout.

Added the cut alpha-era slouch hat to the UK Scout (because of modding limitations, this required sacrificing the jigglebones of his gear as well as the class gear of the Turning Tides UK Scout- which is actually not too bad of a change).

Reworked the Tankers for the Royal Marines and UK on Cape Helles into Ship Captains, as they only appear when commanding L-Class Destroyers. 

The German Tanker is instead changed into a generic “vehicle commander” featuring the new Officer Hat and a standard German uniform, as the Germans use the same models for standard maps and Turning Tides.

Note that these “Captain” classes (except the German one, who replaces the normal Tanker too) are not visible unless you’re in the destroyer customize menu, you have one in your squad screen or a round end squad highlight, or if a destroyer captain bails from his ship. If you happen to take the rather inadvisable action of bailing from a destroyer, the Captains also have matching 1st-person models.

Added Brodie helmets to the UK and Italy's Sentries to more easily tell them apart from Central Powers Sentries. Unfortunately giving this helmet to French and Russian Sentries was causing crashes and has been removed as of 2.03.

Moved the Royal Marine Medic’s hip gear with the wrench to the Support (unfortunately the Support’s hip gear causes clipping with the Medic’s sash so he doesn’t get replacement gear).

Changed the UK, Italian, and Austro-Hungarian tankers to use nation-specific helmets, meaning every faction’s tankers are now visually unique.

Version 2.01 makes no changes to visuals but fixes the game crashing on Turning Tides maps. If you downloaded 2.0, I'd recommend replacing it ASAP.

Version 2.02 fixes a head shadow issue with the German Scout that's been in the mod since 1.0 but that I (being blind and dumb) didn't notice until now. A comparison between the two is in the images.

Version 2.03 fixes a potential crash on French and Russian maps by removing the Brodie helmets from their Sentries.

A million thanks to Jay Fuzz aka HarloLovesGames, who taught me how to use Frosty Editor’s Import and Export features, provided tons of feedback and advice, and created the edited meshes and textures necessary to make the cut content additions possible!