Oh, I forgot this one before:
NO long-range teleport!
You will NOT travel more than a few hundred yards in the blink of an eye.
If you want to get somewhere, you have to actually travel there. Travel and meeting people helps build the world and give the players a sense the world exists, with or without them in it. If the travel would be boring, I will hand-wave it. If something interesting happens along the way, you'll get to encounter it instead of immediately BAMF!-ing to your desired location.
Imagine how boring LotR would have been if Gandalf could have just teleported himself and Frodo right to the mountain. Now, I'm not saying I'm a master world-builder with Tolkien-like skills and depth. But, no one would have really given a crap about how much work he put into building his world if we never got to see the heroes navigate it, or learned about any of its important places through their eyes and ears.