User blog comment:AYET/The worth of the Shichibukai to the Marines/@comment-5962458-20130529072238/@comment-6920514-20130529154227

As far as how powerful they Navy could have become don't forget about Vegapunk. He created the Pacifistas before the timeskip and could have mass produced thousands by now. Not to mention if his considerably less talented assistant created artificial zoan fruits from his old design I'm certain he's provided the Navy with a much better version possibly even adding paramecia and/or logia to the mix.