I don't see why not. Rockstar, Shanks' newest crew member, had a hundred million dollar bounty WHEN HE JOINED. Bounties aren't everything, but it's clear that the Yonkyou have very strong crews, or else the Marines would have mopped the floor with them.

Anyway, I've got a the feeling that Do Flamingo's mind control thing is really more of that "determination POWER!!!!!" thing Shanks and now Silvers have used, and not a DF.

Also, the suna suna no mi was a paramecia type as far as I know.