They have completely different roles, and I personally like Goodra better for it's role as a tank, meaning that I encourage a reliable form of recovery for it rather than Dragonite as a set up sweeper. But that's neither here nor there, I agree that it could potentially be a better Latias, and Blissey/Chansey won't do shit against a PH Goodra, which is exciting! :D Anyway, I vote Poison Heal Goodra, like it wasn't obvious.I'll start off the angry comments,
Dragonite looks at you funny, and uses outrage (Y'all Garchomp and Ttar fans can shut up, Kairyu's the best).