My Cortex rantings have apparently inspired my good friend Rob to run a Starship Troopers campaign, using the system. Kudos, Rob! Maybe he'll post some campaign reports here and let you know how it turns out.
In keeping with my low-tech sci-fi interests, here is a bundle for the aliens from War of the Worlds (the series).
Mor-Tax Bundle: D2 Cost
Absorbtion: D12 Mor-Taxians can absorb a human host, merging their cells together. They gain access to all of the human's memories and, as long as the body is inhabited, the host's skill set. The host's ego and will are subsumed and, when the alien departs or is killed, whatever's left of the host dissolves into goo. Mor-Tax can only absorb human hosts after a host has been subdued.
Enhanced Manipulation (third arm): D4
Uncommon Knowledge (alien tech): D6 Mor-Taxians can typically do more with electronics than their skill set may otherwise indicate. Add to tech engineering and science rolls if concocting an alien device.
Vulnerability (common cold): D12 Exposure to the common cold renders Mor-Taxians comatose within days of exposure. Radiation can keep the virus at bay, but that results in the destruction of any human hosts very quickly, or the overheating of an alien body not contained in a cooling suit.
Triune Nature: D4 Mor-Taxians almost always act in threes, and are uncomfortable in smaller groups. Take all attributes down a step when forced to act individually.
Prejudice (humans): D4 Mor-Taxians LOATHE humanity and have a hard time not showing it.
I'm aware that occasionally other powers were demonstrated, but since that was rare I'd assume those aliens took specific assets. The above traits were pretty much universal except for Quinn, who clearly didn't take the Mor-Tax bundle.
For those interested, the Morthren bundle would have a D2 cost and would consist of Uncommon Knowledge (alien tech): D6 and Prejudice (humans): D4. They've abandoned their triune nature, extra arm, ability to absorb human hosts, and have inoculated themselves against the common cold.
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