Since I thought about it more, I think I don't like Guardians specifically because it's such a tease. You have two shows in a row that both go on for a long time, then a decent sized queue after. Compare that to the Haunted Mansion, where you have one show and are on the ride within 5 minutes after it lets out. So you are waiting the same amount of time, but Guardians make you think you've reached the end only to surprise you with an extra 20 to 30 minutes. I'm sure some people prefer each design, and it's not as bad when you know what to expect, but the first time I rode Guardians it felt like the two shows dragged on for longer than the line.