I remember the old castle. It was fairly modular but I have to admit I think the new one is more so. There's just more pieces and I think they look better when their set up individually, compared to the old one. Mostly in regards to the walls. A towers a tower regardless, but the walls for this new thing look better by themselves, or just a short piece with a tower.
As long as the highly chaos nature of it doesn't bug you of course.