Theory: Drawing parallels to predict the conclusion to WCI

Short theory here. A lot of people have been speculating if Luffy and the SHs will defeat BM by the end of this arc, and if so, how. I'm not clear on the "how", but I think Oda may have given us a hint. We know Oda likes to parallel Luffy with Roger. There was a brief allusion to Roger's infiltration of WCI in Ch. 853. It's not clear whether or not there was a direct confrontation, but we do know that Roger at the very least left unharmed with a copy of the road poneglyph (or having read the poneglyph), and that in the end BM was made to look like a fool.

Now, who knows what Oda has up his sleeve, but I wouldn't be surprised to see WCI end in a similar manner: BM retaining her Yonko status, her poneglyphs stolen by the future Pirate King, and made to look like a fool.