Realistically speaking, I don't think she'll be a strawhat.
However, in my opinion, she should be. And here's why :
-Her Hax DF ability. Basically, she has endless potential, thanks to her ability to acquire information in several forms. And, on a mind boggling geographical scale ( 4000Kms ).
Not to mention that she would make for a superb espionage operative, thanks to her charm/ looks.
And to those who say that she wouldn't fit, because it would downsize Sanji's value's as a character. One word : Oda.