The main description is getting REALLY big, so I figured I should start a thread where all the recommended mods go, and if need should arise, for mods incompatible or that interfere with the mod.

Kasrkin Camo by Viper123_SWE
Adds a Kasrkin camo pattern from WH40K

Uniforms Manager by Falcon
Allows you to manage soldier uniforms.

GrimStyleArmor by Count Grimhart
Adds new armor items with different camo locations and orientations. HUGE recommendation, since it fixes the wonky orientation from the vanilla armor.

ADVENT Armor by Dor
Adds sets of armor worn by ADVENT units. From Troopers to Avatars.

Additional tattoos and facepaint - Asian by イナゴ
Adds a set of tattoos and facepaints of asian origin.

Metal Gear Solid V BDU by Nindzya Nyub
Adds a set of customization options ripped from MGSV. The BDUs resemble real life military uniforms, and they look a-mazing with the camos.

Ink and Paint by A s s h o l e M a d d o x
Adds a variety of facepaints and tats.