The addition of dragons and a brief reminder of saddles got be thinking. How awesome would minecraft be if you could get a pet dragon and then put a saddle on it. what about adding horses or letting us control the pigs with (a hopeful addition of) reigns? upgrade the boat system so that it could be faster or even make custom boats. add blocks such as ramps in order to make road for cars (which i also hope they will add). whether beast or machine, i see that minecraft has a lot of potential in this regard. I'm just hoping that plenty of people who mod minecraft read this post so that if notch doesn't provide it I can still have it.
Horses are in the mod Mo Creatures but its for 1.8.1.