I find it odd that people cant find their way out of the DR in its current state, not to be rude, but you would have to be an idiot not to be able to find your way out, Its a straight shot from beginning to end, the only place you can turn a wrong direction is at the library, and even there, neither direction leads anywhere. The ONLY plausible palce to get lost, is the one spot where you have to drop down to continue, and that isnt hard to see if your brightness is turned up.
Having at least a couple twists and turns, as well as some dead ends would make the DR more Ic for the settings, but the portal idea is by far the best.
And if that did become a problem for new players, make it possible for them to 'find' a map, written perhaps by somody who has spent years attempting to find the exit.