Give Roach Mutantrace a new gimmick ability

[Lefinch]

I like the pheromones idea a lot - the idea of a rudimentary dark souls message left around that only roaches can read and see is very fun to me. would probably have to be boiled down to simple concepts/emotions to not add too much of a Communication Advantage

You could do the old "Signs/code/cant" thing like this but with roach symbols/expressions.