I'm not sure why people feel that some kind of individuality is a bad thing and classify it as just 'eye candy'. As either a human or an alien, coordinating activities is the most difficult aspect of the game. Think how much easier it would be for two/three player 'strike' teams to reform after getting killed if everyone could have some kind of unique identifier? Yeah, you can 'look' right at someone and see their name, but that is a lot of wasted motion and time. I'd like to hit the ground, go to my rally point, see that Bob and Alice (blue armband, yellow armband) are there and we head out to SWAT bugs.
Ever play a sport where you have somewhat randomly formed teams? Never heard of 'shirts vs skins'? A quick visual identifier is of great use in a firefight.
There are players who just like to run charges into the enemy and get themselves killed. I don't want to follow when they start yelling "come on!". But, if a skilled player wants to lead a charge because the OM is down, I want to follow!
How about identifying 'rank'? In team play, you often have a structure for who is in charge of what. Being able to quickly tell that the guy trying to jump the turrets is the boss--so you can let him though--would be priceless! What about having the builders a bit more visible? If the base just got rushed and needs repaired, I don't care how badly hurt I am, I need to let the builders through to start repairs. I can heal after they're through--there might not even *be* an armory nor a medstation without them!
But the bugs, it's less of a use, but I'd still think that it would be good. I still love my joke (yeah, I know, laughing at your own jokes is a bad sign, but others laugh, too) which I normally say as (playing alien) we get S2--"Time for *Advanced* dretch!". Think of how nice a 'black widow' patterened Goon would be? What about how demoralizing it would be to get killed by a bright pink dretch? (H)BigWank:"Ha ha, look at the silly dretch! How gay!" Console: BigWank was bitten by BunnyFooFoo (A)BunnyFooFoo:"Hmm, 'bite me' doesn't seem quite right..."
I'd settle for just little glowing red eyes for my dretch. I think that would creap humans out. Same damange, manuverability, etc., but just glowing red eyes.....