While most likely at least some of these ideas are already by considered by the devs for addition into the game, or even are not even being considered, might as well write up some ideas.
Some clothing/gear assets:
Some Balaclavas:
https://m.media-amazon.com/images/I/511INo4i2GL._AC_UX569_.jpg
https://img.ltwebstatic.com/images3_pi/2021/07/12/162605867916f78f6baac31b25949b666b81f5f621_thumbnail_600x.webp
https://www.ubuy.co.it/productimg/?image=aHR0cHM6Ly9tLm1lZGlhLWFtYXpvbi5jb20vaW1hZ2VzL0kvODErSTRLazAwdUwuX0FDX1VMMTUwMF8uanBn.jpg
Soviet Pilotka:
https://m.media-amazon.com/images/I/31j+AkYw43L._AC_.jpg
Soviet Army Tanker Helmet:
https://thumbs.worthpoint.com/zoom/images1/1/1216/11/soviet-army-tanker-helmet-1989-afghan_1_54f320389b5d3fad780be97f43b106ab.jpg
Russian Ushanka:
https://i0.wp.com/asiatimes.com/wp-content/uploads/2019/12/Christian-Science-Moniitor.png?fit=767%2C470&ssl=1
A version of the FIA M70 Top with the hood up
A Maglite Flashlight for use by FIA forces, the main disadvantage of these ones is that you cannot really clip these on your vest
Weapons:
NATO/US:
M47 Dragon
MP5
.44 Revolver
Benelli M3 or Remington Model SP-10
M24 Sniper
M1911
Soviet/Warsaw Pact:
Bizon
RPG-29
KS-23 Shotgun
AS-VAL
AKS-74u
VSS Vintorez
FIA/INDFOR:
G3A3 or FAL
AKM and AKM GL, or read below about the vz. 58
RPD, or read below about the vz. 58
Kozlice shotgun, with sawn-off variant
Hunting Rifle
CZ 75 Handgun
The Czech vz. 58 is another consideration, also apparently there were prototype underbarrel grenade launcher and light support weapons that were never adopted, considering Arma 3 setting a precedent of using prototypes as inspirations, maybe have these IRL unrealised variants available so that the INDFOR/FIA forces have their own specific range of weapons?
Vehicles:
NATO/US:
M113A3 APC
M2 Bradley
M1A1 Abrams
M60 Patton
Bell UH-1 Iroquois
Bell AH-1 Cobra or Boeing AH-64 Apache
Sikorsky UH-60 Black Hawk
Boeing CH-47 Chinook
Warsaw Pact/Soviet:
BMP-2
T-72B
Mil Mi-17
Mi-24A
Mil Mi-26
An Armed Variant of the UAZ with a mount Machinegun
Like with my other posts, I will be editing this over time with new ideas as I think them