I said tailored simply because I think that is more important than status quo. A mix is preferable, but mostly tailored would make for more fun, IMO. It might make sense for the dragon to be a great wyrm, and for the local bandits to be led by an ogre barbarian 5 levels above me, and for all sorts of things. But, you still have to have the main adventures revolve around appropriately challenging encounters or you'll end up scared of your own shadow - not the adventures that I prefer, personally.