
Originally Posted by
Tenebrae
Hell,
Going a step further, it's likely that the Terrans were another side project of the Xel'Naga's...seeing as how the prophecy has Kerrigan within it, leading to the obvious assumption that they had planned a Terran/Zerg hybrid from the get go...or at least whenever that prophecy was etched in stone.
The gas may, infact, have been a plan to enhance the Terrans had they taken too long to develop...or been a component in their very creation, were they a side endeavour of the Xel'Naga. Either way, she wasn't just the Overmind's answer to the freedom of the Swarm...she was, and is, the Xel'Naga's as well.