And Ciel can see Cyber Elves not because of her genetic alterations, but rather because of the visor she uses for that very purpose.
Now that is rather interesting. Yet it doesn't really seem to make all that much sense to me. The only time we ever see physically use her visor is while she is in her room, researching one of the Babyelves in Zero 2 prior to Operation Righteous Strike. On the other two occurances where she interacts with Cyberelves (talking to Passy in Zero 1 and seeing the Motherelf in Zero 3), she seems to be able to physically see them without the aid of any technical gadgets. She also seems to be seeing the Cyberelf you get in Z4 just fine with her very own eyes. As a whole, I find it sort of wierd that humans are not supposed to see Cyberelves, especially since Cyberelves are human-created data life objects last I checked. I only remembered that by the time of ZX, humans and Repliroids were unaware of turning Cyberelves upon death.
Well, the MORE economical idea would have been to just retire him like any other Maverick, but I assume that because Omega contained Zero's body, they were hesitant to just destroy it, so they just exiled him too. or they were just sick of all the deaths and exiled him. I really would like to know why they didnt just retire him.
I'd be willing enough to actually call this a plothole for convenience's sake. Omega needed to be formally introduced with a bombastic first appearance, and what better way is there to have a giant, sword-shaped spaceship crash on Earth that contains the harbinger of the near-apocalypse who then proceeds to royally screw two of the remaining Guardians over?