Pete is definitely the master of the unexpected plot twist, but what about the expected plot twists, the ones that everyone knows are coming? I'm thinking of two cases in point, Sasha and His Masterness.
Both cases were heavily speced before hand, and in both cases Pete did something rather similar -- he averaged the spec together and then added a few unexpected elements. (It is my belief that Pete has a good idea what the current spec is. He may not read the SRC forum, but he does plant the red herrings, and I think he is smart enough to know where they lead).
With His Masterness, virtually every theory wound up being right to some extent. Both Riff and Schlock WERE His Masterness, etc...
Then Sasha. Folks have been saying for years that she was an agent of some kind, and now that turns out to be right, but not quite in the way most people thought. She doesn't appear to be related to Kusari, and she may not be Hereti Corp's agent.
How might this apply to Oasis? Pete has placed many hints and red herrings over the years. I think elements of all of them are correct.
Perhaps Oasis is a weaponized ghost/spirit creature with a strong link to the Sun Twin and/or phoenix mythology, which Dr Hereti trapped and used to animate a series of cloned cybernetically/genetically enhanced bodies, which are controlled, tended and force grown by an artificial intelligence, which uses some form of jump-jet boosted drop pod to deploy them from a secret base to the general location where Oasis most recently died. Due to errors in the cloning process each of the bodies has a slightly different neural architecture, and processes Oasis's life experiences and directives differently.
And maybe Kusari is a lesser version of the same technology, with just the AI and the cloned (or possibly stolen and reprogrammed/enhanced in this case) bodies, which lacks the supernatural element that Hereti was able to control and make human, as well as, possibly, the cloning. Which is why she wears a mask. (If you've watched Joss Whedon's Dollhouse, you know what I'm thinking of.)
And maybe the purpose of the supernatural element in Oasis is not about her resurrection, or pyrokinesis, but the web of fate. Because Kusari and all humans are creatures of the web, bound to it, but the Oasis spirit is something different, something that existed before it, and that cannot be controlled by the web, making her an agent of change which acts outside of it, a prophecy killer.
In fact, Hereti may have considered the pyrokinesis to be not a feature but a design flaw, the true nature of the Phoenix spirit coming out and trying to escape. That would explain why Oasis seems to have little control over it. Otherwise, why not integrate the ability into Override B-1? It would make her even more effective and unstoppable, more capable of destroying Hereti Corp assets.
Or perhaps it's something else. But I'm willing to bet whatever the truth turns out to be, it will have elements of many or all of the Oasis theories, all mixed together.

