the current statues are now so old, most can be got for pennies on TO and most players who want them have them already.
I suggest a graphics change for them and make the old one defunct and rename and replace them with newer models. But even better, make them worth having by allowing say 10-15 settlers in them. These 10-15 settlers could be called caretakers or whatever...
For lower level players struggling for population, this would be a great help in the early stages