I wish Bungie would just add a "change instance" button somewhere in the UI. I've played other online games where you can change between separate "instances" of any given zone in the game. If a zone you're in is empty and you want company, or someone in your current zone is trolling you, just change zones without having to go through two loading screens or having to run all the way back through the adjacent zones. Don't know if it would work in Destiny but it would help out a lot.