I have to disagree and say some attractions absolutely do begin with the queue. Dueling Dragons had one of the best, most elaborate queues in any theme park anywhere and it did set it apart from other unthemed steel machines. I would say it was an attraction on it's own, a "castle tour" before we had one in FJ... Hell, it was one of the queues I'd tell people not to Express their first time so they wouldn't miss it.
Downplaying how great the queue for Dueling Dragons was doesn't do anything for what's there now. Mind you, the new queue does have some flashes of brilliance with the dragon shadows flying above the tent and the Goblet of Fire, but overall, it's a huge downgrade. A huge, huge downgrade, albeit the one and only qualm most of us have about Potter's addition.