Well, that's a missed oportunity. Anyway, that's my suggestion for giving a little more spice to the rule.
As a nomad player; oh noes, you guessed my interventor Lt! You genius! As a tohaa player; give a shit, I've got a 3 wound CoC model with pheroware defenses and regen
Symbiomate is effectively counted as an extra wound by a lot of people. It's not technically accurate but it's a quick-and-dirty way to refer to it.
