What about generic supply train ????
Pack animals,wagons,people carrying boxes etc?

Also medical corps ....doctors nurses ordelies once again carrying things ie buckets cloths boxes etc stretchers ...?

Duplicate the Airfix 1/32 7th cavalry in 1/72 and I will buy a few boxes.

Strelets have already confirmed that they are planning a winter set, a most welcome addition. I agree on medical staff, surgeons, stretchers and so on, but I'm not sure how much such sets sell? Personally I'd like to see the Confederate marine battalion during the Appomattox campaign in 1/72 but I doubt they warrant all the work necessary.
A set with Havelocks would be awesome too, but their use would be limited to one battle. Wagons, ambulances and such would be nice too, also figures with the Hardee hat, Iron brigade and so on.

Did they confirm a winter set? I hope so. I need Union in overcoats for Fredericksburg.

I am also up for an Iron Brigade early with Hardee hats and gaiters or late with more campaign hats. Either one is fine.

As for Wild West, I really only need civilians. Bartender, woman with rifle defending homestead, saloon girl, doctor, blacksmith, Indian camp women (running with babies or shouting during an attack is good, but camp poses are fine too, the Imex ones are too big), Pony Express, railroad track workers etc.

Check here for inspiration from Marx, especially the Gunsmoke section:

http://www.marxwildwest.com/inventory3.html

Reamsa also had some great Western Townsfolk:

http://www.stadsstuff.com/?p=8020

Dulcop bartender:

https://i2.wp.com/www.stadsstuff.com/wp-content/uploads/2017/08/Bartender.jpg

Bonanza from Comansi (notice Hop Sing the Chinese cook):

https://fotos.subefotos.com/caaf41ecfb78c6a191d016b02d27c7abo.jpg

High Chaparral from Comansi:

https://fotos.subefotos.com/b305eabdb439cbfc70f8f01053a594bbo.jpg

BMC Indians, note the two women figures:

https://www.ebay.com/itm/BMC-CUSTOM-INDIANS-LITTLE-BIGHORN/152628888922?hash=item238964055a:m:mq1DE4vl-tn9szJqyUng7mA

I asked Strelets about the greatcoats for winter campaign a while back:

Though we haven't heard or seen anything of them since..

What I would like to see is "surrender/prisoner pose", arms raised and muskets in the air, as well as soldiers with white flags. Would love to have some troops walking away from the fighting as prisoners, you never see that in 1/72, I feel it would be unique but I guess I'm the only one lol