As everyone from above says, I wouldn't like the idea of dragons in the game. If people want to, they can make their own with markings/presets and items. On the matter of people riding on your back, I strongly dissagree. Though it sounds fun, there are lots of immature people in the game that would abuse it and do nasty things with it. Maybe they could IF it sent a request to the player the person wants to ride on, saying something like "*Insert Name Here* wants to ride on your back. Yes/No?" But if they can ride whenever they want, then no.