An island full of Kung-Fu Dugongs with this song playing in the background.
And then there will be a huge hole in the Earth filled with gold to the brims, and women dancing around the hole, and then the True History Poneglyph will be on the top of the pile of gold.
Oh, and Roger will still be alive, laying on the sand, sipping a glass of Pina Colada with some honeys around his arms.