If you haven't noticed already, The camos in-game are very bright compared to how they look IRL. For example take a look at the image below:
Now take a look at how it SHOULD look
The different is night and day. Brighter colors make it much much easier for you to get spotted.
It wold be nice to see some floral headwraps like the ones YPG fighters wear, Hell, There was a character wearing one in one of the pictures when you showed a concept thingies for the story.
Some more hair styles would be nice too... oh and uhhh Wrist watches...