Our Cockroachgroup focused on the Oriental Cockroach, because it is the only cockroach, which carries her eggs (between 16 and 18) in a case for 30 hours. It has a very protected surface. So, we created the concept of the "Super Mom".
In our scenario the mankind will die because an atomic war and the cockroaches become bigger and superintelligent. So, the female cockroach creates a more comfortable and more protective bag for her eggs. She will just use two arms for going shopping or fighting against enemies. The other 4 arms are busy with the eggs. If she is tired, she can sit inside the bag, so it´s also a protection place for her.