A very flexible set. The towers are versatile and the instructions are comprehensive on how to use the pieces, with many useful examples.
It would be useful to have the ability to hide the shutters on the tower components, if only to save a bit of ink if they won't be used.
The wall sections are quite tricky to put together. What I've done is to cut a piece of foamboard to the correct height and longer than the wall: it's already the correct thickness. It then slots nicely into the wall so that you can glue the long side first, then glue the side tabs. This makes the job faster and more pleasant.