My ideal set for The Fall of the Necromancer set would be;
A large brick-built Dol Guldur consisting of the main tower plus a few ruins.
Minifigs: Gandalf the Grey, Saruman the White, Radagast the Brown, Galadriel Lady of Light, Celeborn Lord of Lothlorien, Glorfindel Lord of the West, Elrond Master of Rivendel, Cirdan of the Havens, Sauron the Necromancer, Khamul the Easterling darnnit!!! (stupid usurper Witch King!), 1x Castellan of Dol Guldur, 2x Orcs.
Total pieces: 2000+ (go big or go home I say!)
Price point: $200(CAN)
Granted, Lego would likely not be allowed to include poor Glorfindel, Celeborn, Cirdan or a Castellan since PJ has left them out of the mix in the films...
But hey, a girl can dream right?!