Foundations; Because of the, mostly, uneven ground at certain locations. I believe it should be possible to build
foundations at the lower end of existing foundations.
Also it would be good if we could raise and lower foundations before building them.
Ramps; There should be Corner ramps.
It would be nice if we could build ramps on the side of foundations. Instead of only building it on them.
Windows; Wooden and metal windows.
“Higher” quality metal; For example; 5-10 low quality metal makes Steel.