So I noticed the following: when playing as Security, your teammates are marked by a light blue rombus or such on their body. Now the thing is, you can pretty quickly unlock some blue shirts/hoodies/etc. for the insurgent character. These are very similar in color, and often make recognizing the enemy playing as Security pretty difficult. I find myself dying 2 to 3 times a match due to this. It only takes a few fractions of a second to realize what's going on, but that's all it takes in a firefight with a TTK like the one in the game. I'd suggest to either remove the blue clothing options from the insurgents, or change the color of the rombus to something like a bright green or such.