I think rules for it this time around would be an absolute necessity. It was far too open to abuse and confusion before. But another thing I personally think is vital is a Game Master, one person - a mature person with a reasonable grip on reality and not undergoing a power trip - that can quickly and efficiently sort out conflicts or problems, and do so without antagonising anyone (hopefully). With no one running the ship, it's far too easy to go careening onto the rocks while everyone is below decks playing footsies. Oh, and having basic storylines that are likely to appeal to the broader public rather than a small minority.