It’s so hard to understand what traveling does to your brain unless you’ve done it. It’s like a drug that completely opens your mind. You become addicted to the feeling of change and leaving your comfort zone. You learn so many new things about yourself and most importantly you become so aware of the beautiful and breathtaking world around you.
griffin mentioned once that a lot of his arcs are based off of/inspired by things that he really likes (example: petals to the metal was based off fast&furious). i started my campaign by picking my favorite movie, dumbing down the main problem&and solution, and then fantasy-ing it. so if you do an arc or something by the book, let it evolve on its own and see how your players take it, from there you can take stuff you&them like and add it and change it and let it become it's own thing