So the other, 2yr old, thread pleading for the Zero class to come to Reboot was locked for seemingly no reason after being bumped. The last acknowledgement I remember hearing about the topic was a MapleFest Q&A session where the response was "we'll look into it." And remembering the one time they accidentally allowed Zero to be made before wiping them in a soon-after maintenance, so it appears to be possible.
To be honest, I'm mostly just looking for a direct answer of if it's even being considered at the moment or not. I have friends that have quit the game but acknowledge that they would 100% return for Zero to be released. I'm enjoying the game right now but the needlessly exclusive class was so much fun to me when I played a regular server.
Before "KMS doesn't have so no" - we still have SW gear, Gollux, Kanna, Hayato, Beast Tamer, and Frenzy/Fury totem. We're not 100% in KMS footsteps and I just want this to be another exception.
Edit: Here is the previous thread referenced. I only include it because OP pleads his case and solutions more clearly than I am able to.