User blog comment:AYET/The Mera Mera no Mi and Doflamingo/@comment-3425840-20130301174245/@comment-3425840-20130304105626

Yes and no, if it was a weak subordinate then the fruit would be wasted if a super strong one to boot (like vergo,note Vergo without df is about Ace's level if not higher) then it could pose problem.

Also WB had the good guy attitude, DD while extremely cocky is kinda sinister, so it is unlikely for him to show out most trust.