Dragon has only been riding around on a horse, covered by a green hood, trying to win over people from poor countries to join him, and that's it. His team is pure garbage when it comes to military power. He's not at all intimidating in that sense, all the Emperors would easily defeat him. His son did the job of freeing Ivankov and Inazuma in Impel Down. LMAO.
He's a coward who runs away from Blackbeard. Dragon is literally the biggest failure in the manga. He has never engaged in combat, and there is nothing to suggest otherwise. LMAO.
I wouldn't be surprised if Imu kills Dragon so that Sabo can actually assume leadership. It seems like Sabo has more guts than Dragon.