Yes. Our dragon sucks so much that even I hardly ever use it.
Up until now, I've literally put down two Massive Dragons. That's it.
Even in Chimera decks, you're better off with Armagios and some other form of offense. Try Chargers or even Guards.
By the way, please realize that most mono gravity decks do not function well with only 12 towers... Gravity cards cost so much and this deck, even without the chimeras, has the quanta index of 8.
(total quanta for creatures + black holes = 96, 12 towers)
Most well-operating decks have the index of around 5.