I'm not sure how I missed blogging these when he posted them last fall. We've already seen a couple of sets based on the Return of the King, with the Pirate Ship Ambush and Battle at the Black Gate sets (and arguably the Shelob Attacks set - the movies break at a slightly different point than the books), but we'll surely get at least another wave. There's so much more action around Minas Tirith to be covered, and we'll probably get some 'Cracks of Doom' set with Frodo and Gollum. Anyway, last fall John Lennon/Nuju Metru posted a series of Return of the King set ideas.
First up is the Paths of the Dead. This would include Aragorn, Legolas and Gimli, and the ghostly king. He includes action features to throw the king off his platform, and also to launch skulls at the three heroes.
Next is the Witch King Demise, with Eowyn and Merry battling the Witch King. I think this is a pretty obvious set, though I think when LEGO does it they will include the Fell Beast (I realize that Nuju Metru already built a Fell Beast in one of his other set ideas, which is probably why he didn't do it here).
Finally there is Minas Tirith itself, which Nuju Metru proposes as a huge set with lots of heroes and villains (btw, he's also put this up as a Cuusoo project). I don't know if LEGO would build the set this big (but who knows? the Orthanc set is huge, and the Star Wars theme has huge sets like the Death Star and Imperial Star Destroyer). I'd suspect that instead they would do a series of sets that could all go together to depict the battle outside the walls. I'd do four sets - one of the main gate and Grond, one of a section of wall (that connects to the gatehouse on either side, so you could buy multiples) along with a catapult or siege tower, an Oliphant set, and the Witch King vs Eowyn set with the Fell Beast. Orcs, Haradrim, Gondorian soldiers, mounted Rohirrim, and principle characters would be spread through these sets so you have to buy them all. Of course, it was always my idea that LEGO would do different sections of the Death Star as separate sets that hook together, but instead they did one huge set, so they may well go that way with Minas Tirith.