one solution they could do to solve this is them creating "kits" as in, lets say you put partitions to make a wall, instead of adding 4 partitions, you craft a "kit" of 4 partitions, which instead of taking 4 item slots, takes 1
this kits could be basically basic stuff like partitions and lofts crafted to take more space what they do now
stuff they could do are like
2/3/4 partitions as one
lofts of 1x2/2x2 and so on
desk and coach as one item
a few examples of what could be done to reduce the amount of items we put in our houses