Well when all you can come up with is Frodo with Book, it just might be time to pull the pin.
I think the big difference with this line and Star Wars is that you see here what happens when you don't have a truly hardcore collecting, um, core. It is and was a fantastic trilogy - some brilliant movies that were extremely well done. Like Star Wars it has a core group of characters you can do. Unlike Star Wars you have a hard time telling a Legolas from a Legolas, whereas you can tell farm boy Luke from Death Star Luke. Does it matter? Apparently yes.
The kids ate up this line, as did a number of collectors. But if you've been watching lately, there's little if anything that has held any value. Everything, like all toys today, are tremendously mass produced and nothing is rare. You have collectors/speculators that keep stuff MOMC meaning finding something is easy, even after it's away from retail. You have no history with this trilogy, aside from the books. But that all important market - the kids - moved on, as kids do. Oops.