I'm perfectly fine with dragons, but as others have said, slightly wary of how they might fit in this particular game. I'd like to avoid a hack and slash encounter with a dragon. But as a mystery to investigate, or a major NPC shaping events in the story? That could be cool. Some of the metallic dragons in DnD are shapeshifters who love to play politics. Or Greens. They make good scheming villains. Either could be behind some of the emerging political dynamics in the game in an interesting way.
All that said, though, this is also *your* game! DnD is a platform, but you should be able to modify that platform however the heck seems fun for you! If you want dragons, let there be dragons!