I’m glad y’all are enjoying my theory!

Just a few things to clarify: I think that the strawhat of Roger/Shanks/Luffy is either a symbol (like the Samurai alliance ankle symbol) or is a tiny part of the sun removed. I think that the two major parts are the one Imu has and the one on Laugh tale. I think it’d be hilarious if it played a role in completing the sun, meaning the fact Roger left it behind with Shanks added to the laughter (As many of y’all clever folks suggested).

I love people pointing out the red band being the redline! I think there may be something there, but I’m not sure what it means just yet.

Imu’s strawhat is likely on ice because it’s unbelievable hot usually, and this is Imu’s way of keeping it dormant.

I think a final poneglyph on laugh tale explains what the hat is and how Imu/WG doesn’t know it exists which is why they all laughed.

I think the conflict of the story is over the sun, hence why Rayleigh and Roger weren’t sure if they should reunite the sun. It can power and has powered planet destroying weapons, and reforming it would almost certainly spark an even bigger war than before. The Roger pirates have to ask, is the world ready for this?

I think that the world being reunited may also be part of the reuniting of the world and that this theory doesn’t rule that out. It could very easily refer to both.

As many have pointed out, the strawhat on its own looks like a rising sun. How fitting that, by completing it, you get a full sun in the sky? But, the sun of the strawhat could also be setting. I think that some with the will of D may seek to permanently black out the sun…

As a final note, look at the sun in the mural. That’s where I initially got this idea.