Will of the Alliance Quest

Yeah, I would assume if the new KMS Cygnus classes are in it, the nova classes only aren't because Nexon specifically chose not to include them. Whether it was for balancing purposes like CarrionCrow suggested or if they were too lazy to write an explanation for it like I originally assumed is anybody's best guess. Either way, that points to it being intentional and that they're not going to get them later on.

The revamped Cygnus classes aren't new classes. They're just overhauled classes that already exist.
Alloy's post gives the most likely reason; they're not from maple world, so they're not in the maple world's alliance.

Edit: Easiest way to disprove it is if DA/Xenon can't get the skill.