I understand now. Thank you for clarifying
For the logic part, I try as much as I can to follow some sort of plan or logic, but I'm not sure if I'll ever really be able to get as in-depth with the map creating as you mentioned before. I consider mapping one of my weak points, it's more of a chore to me than a fun part of the game creation. I focus mainly on story and music, but I create the maps myself anyway because it's part of the game and I like the fact that I created them myself.
I like the tree arrangement that you posted, I will give it a try and see if I can pull it off. Thanks