This Modular Castles theme consists of various iconic castles, both real and fictional, from a variety of different locations and fantasies, in detailed Lego form.
For example, castles such as Alnwick castle and Windsor castle, and castles from medieval fantasy TV series' and films, including Wizard's castles would all make great Lego sets.
The castles would be much larger, more detailed, and more accurate than the current castle sets.
Also, this theme would focus more on the castles themselves, rather than the battles and minifigs.
I recently designed this Lego model of a medieval castle from a popular HBO television series. This could possibly be a UCS set for Lego Modular Castles.
Here is a very basic version of the model, done in LDD: