Hmm. I'm not sure about having the crabs be totally useless by themselves. I'd rather do something like
Scuttles: Pulled from the gene banks, patched up with the DNA of Earth crustaceans, Scuttles are here to provide mobile cover to our troops. This chitin-covered species has six crab-like legs, a lobster-like tail, and a sort-of-humanoid torso. Notable are their arms- one has a large plate of alloy-reinforced chitin on the end, forming a nigh-impenetrable shield. The other has a large claw, which can cut through some extremely solid objects. A plasma pistol has been mounted on the wrist of the claw-hand.
Scuttles are not especially fast, but their chitin provides natural armour, and their large shield makes them all but immune to conventional weapons fired from in front. Allies can take cover behind a Scuttle, using it as mobile cover. And whilst their offensive power is somewhat lacking, don't think them harmless- their wrist-mounted plasma pistol can still cause serious damage, and if you let one get close to you, one snap of its claw can cut right through flesh and bone.
Design:
Armorer Crab [1] - Failbird105
- Use DNA token [1] - Failbird105
- Don't use DNA token [] -
Scuttles [1] - NUKE9.13
- Use DNA token [1] - NUKE9.13
- Don't use DNA token [] -
Bonus Design:
Recruit Collaborators [2] - Failbird105, NUKE9.13
PS, for ebbor's benefit, here's the description of Recruit Collaborators:
Recruit Collaborators: Not all Earthlings are irrationally opposed to our efforts to bring them into the Great Plan. Many are, for various reasons, willing to cooperate. Some want wealth, their desire for the worthless metal they call "Gold" overwhelming xenophobia. Others want knowledge, and will work for us in exchange for meaningless secrets. Some simply want to be a part of something greater than themselves. Whatever their motivation, we can accomodate them.
We send a team of negotiators to contact susceptible individuals, establishing communications and providing whatever it is they desire. Subsequently, the converted Earthlings will serve us, providing information on their country's actions, offering assistance in further missions, and spreading our influence to make way for our eventual takeover.
Mechanically, the goal of this mission is to contact, negotiate with, and then ensure the safe and anonymous departure of our new allies. Should XCOM interfere, they should be either eliminated, or kept away from the negotiations long enough for them to conclude, and prevented from identifying our collaborators.