i dont really get why the mantis does not have a tank sign.
in supcom the signs are very important and should be able to identify a unit excactly most of the time.
and since the mantis is the light/heavy tank for the cybrans it should have the same sign. its just much more easier to difference it from t1 light assault bots.
i know its a bot and bot signs have that shape in supcom... but in that case i think gameplay > ehm... supcom principles ? (^^).