Unfortunately, HP doesn't mean enough. there's 1-3 (single normal cc), 4-5 (single tough cc), and 6 and up(highly resistant to CC). once you get above 6, most will just opt for CC that ignores HP (which I hate). Sure, some cards are slow drains, bolts can have multiple charges, overdrive, poison, etc. But right now you use >10 HP for three things primarily: GP, OD, or catapult. Armagio wins the first two, and flying titan gets the second.
Dragon needs momentum, to make it a combined Armagio and charger for more cost, or a significant attack boost, though I prefer option 1