As much as I love the add-on, there were so many things they could have done...
My ideas are:
- Allow the Dragonborn to create a whole town, then hire followers (i.e Kharjo, or a mercenary, etc) to join the town. Then get some to become say, a town blacksmith.
- Allow different building styles, and opportunites to house military operations.
- Have your town influence the world of Skyrim.
- Allow the house to be more of a fort.
Anyway, just my ideas, be critical all you want.