That would seem logical to me. Though I'm fairly new to this, it seems logical that great themes are great themes regardless. And I'm talking about pop culture, movies, TV. There may be slow times when they slip out of recent memory, but every 5-10 years there's a resurgence. It's great when Lego doesn't get the license. It's still good when they do (the threat being the remake). Case studies: you've already mentioned Indiana Jones, Harry Potter and LOTR. I think the trend would work like this: theme retires, initial bump, matures progressively then plateaus according to the strength of the pop culture/cult following. Resurgence is triggered by a remake, anniversary or news about an icon (typically death of an actor or Creator). Prices jump, stock suddenly appears as everyone starts uploading their stashes which causes the price to level off, but still better than before. If Lego doesn't pick up a new license, NIB becomes even more rare. Price settles much stronger than before, until memory fades and demand isn't high enough to sustain the inflated prices. That would seem the normal trend of a great, non-continuous theme. Think of the old SW, before Disney bought it and all the cartoons made new sets a seasonal event, rather than a decade event. That's why I think Idea sets like exosuit crashed and will stay down. There's nothing to generate demand 5-10 years down the road. Only An Idea set enthusiast would want that set to finish their collection. Despite how cool it looks, there's no pop culture/cult following tied to it. That's why I didn't buy any Birds. I can see Lego building more birds in a Creator set in a couple years, 3-in-1. Same with the maze, cool idea, fun set. But who's gonna google "Lego game like a maze with a ball"? And then want to pay 3x retail? Scooby doo has a strong cult following that revives every 10 years. There's a movie coming out soon. If Lego doesn't get the license, awesome. If it does, that should still be fine as long as it's short term, 'cause the sets will likely match the movie, not the old TV show. And there are lots of episodes from the show they can glean from. It's not Disney, so there is hope. Case studies to watch right now: 1) new PotC movie. Do the old sets increase or decrease? How much does success of the new movie play into this? How much does the new sets effect the old? 2) new Angry Birds movie. If this comes out before the new Scooby, does the new movie effect the old sets at all? Not as good as a comparison because Scooby is a 40+ year old franchise compared to the