Banner Map Pins in Bedrock with nbt data.

You can make banner map pins without loading chunks, whenever you interact with a banner and theres a map in your hand it updates the nbt data of the map to have the pin, then whenever that chunk is loaded again it checks if the banner is still there, if yes, the pin stays, if no, it deletes the pin, I may be a genius, or I may be an idiot, but I know one thing and that is how this is an idea that took a lot of thinking and researching to get to.