The first big obstacle of setting up a Dungeon night is coordinating everyone's schedule. It must have been easier in junior high, when a Friday night was as free as an Aerial Servant. Now, as adults with "jobs" I'm finding it very difficult to secure four sequential hours in which to game.
The last time everyone in this game was together in the same room, it was for a wedding of two of the gamers. I hope it won't take a year of 'saving the date' to get us all together again.