Dragon is not enough!

I really like the dragon opening, sometimes on the queen side, sometimes on the king side. But is it enough to start the game?

Because in good games we should have as many pieces as we can in the center or in other good position i like to add the dragon the move e4\d4. When the dragon on the king's side d4, and when it's on the queen side e4. 

Why?

I'll show you two variations of the dragon and then you'll see the position and decide weather it's a good or bad move.