Hello there,
Recently, I found myself flying around Hallowfall, merely looking at the various locations and their incredible details. This eventually took me to the back side of the Priory of the Sacred Flame, where you can find the giant hole in the wall, where the last boss fight in the dungeon takes place. It was, of course, blocked off by an invisible wall; however, this made me think that Blizzard could potentially gain a lot of favour if they opened up a location like this, allowing roleplayers to fly in and use it as an additional location for RP.
Besides this place, I’m certain that there are many other dungeons and instance-locked locations with similar potential, and seeing as the dungeons themselves are set in an instance, I don’t see why this would cause any issues at all. With some luck, Blizzard might see this. One can only hope. But what are we thinking?