They're probably waiting for a better time, Cyber Dragon would open the door to new answers to Fur Hire...but I think we can do without for the time being.
A better time? Just when is that? If you ask me, this game doesn't have that much more time if Konami continues on this path with the gem nerfs and repetitive events.
Cyber Dragon is the card the community wants, but not the one it needs...
Seriously though, it can make a bigger splash later on, potentially luring in more players. People will leave the game regardless of nerfs and changes, the trick is to get newer players with fresh material.
:v patience, young one, the time will come. I would expect Sheppard to be the one to bring regular Cyber Style into the game (Cyber Ogre) and THEN we might get Cyber Dragon if not before.
Nah, even if it dies down, Duel Links will still get support and new material. DL is a beta test for real life Speed Duel formatted gameplay...so you can bet they'll keep adding stuff despite their reputation.