I personally feel like Cyber Dragon isn't all that OP. Yes its effect lets you summon it without tribute if your opponent controls a monster, but then there are similar cards like Big Piece Golem, Power Invader, etc that are already in the game.
But golem and invader use up your normal summon. So you can normal summon light hex sealed fusion and get an instant cyber twin. But I would still like to see cyber dragon at some point.