Now with rotating lobby's, it's so confusing to keep track, so there should be a purchasable gadget that is kind of like a pirate map, it's in a scroll so you have to grab it by 2 hands and open it, then it shows you every room of the world you are in.
If you are in the public world, it shows you all the public maps. If you are in your private world, it shows all your maps and same with community world.
It would show you a color to show what biome it is and text in each box to show what the name of the world is.