Unbelievably, I did not make the connection between Whitebeard and Big Mom and their crews as foils until just now! I feel stupid now, but am really looking forward to that meta, I'm sure it's gonna be a good read! Do you think Oda might do a similar thing with Shanks and Kaidou? There's probably no way of knowing until we reach Kaidou's arc. Or maybe with Blackbeard instead? Though I always felt like BB is supposed to be a Luffy foil.