Just read about “new desert planet Pasaana.”
It’s a minor thing, but if you want a desert planet why not pick Jakku or Tatooine, and if you want a new planet then why another desert planet?
I don’t know if the planet is specifically a desert. I think a lot of the locations take place on different parts of the same world. My theory is that this planet is highly connected to the force. Almost like force Mecca.