[Keroko]

Originally Posted by The Small One

Do we really know, that this is what he really wants? Or is it just what the WG told the people that it's this he is aiming for?

Considering we're seen people reporting to him how their rebel forces have freed another country and that his personal compatriot says the exact same thing as the World Government... I'd say yes.

Originally Posted by Wolcik

Right, we don't know why, but we don't know exactly "how" too. He somehow takes control over or frees cities/islands, but we don't know much about the process, like how did Iwa saved many islands.

True, we can only theorize. We've seen an officer giving reports to him about rebel armies being successful, and his reputation as 'the man behind all revolutions' makes an easy theory that he is adept at using popular support using the D's mysterious ability to inspire.

Originally Posted by Wolcik

The thing with Shichibukai is that they are using WG or are afraid of it.
Boa is a Shichibukai because otherwise WG could attack her people, and WG is the only one that is able to get there (so no help would come).
Don Flamingo and Blackbeard (like Crocodile before) is planing something on the side while using WG as a shield.
Mihawk is using his title just so he can fight boredom.

If Dragon gave Shichibukai a diffrent way of maintaining the things they gain from WG, then he wouldn't have to fight them.
If there were no WG, Hancock wouldn't have to even be a Shichibukai.
I believe that Mihawk lost his purpose in life a little after becoming the strongest sworldman, because there is bearly a challange for him, and Drago could give him a new purpose.

However evil guys like Blackbeard or DonFlamingo wouldn't be that easy to work with, but maybe Dragon could pull it off.

True, those that have are Shichibukai out of necessity would probably join Dragon, those that have no need for the Shichibukai title might join Dragon, but in the case of for example Mihawk, why wouldn't they opt to fight instead? Evil pirates would be tough to force into an army that relies on popular support, and many of them would relish the challenge of fighting any enemy, including Dragon.