After playing around with the Alpha 5 for a bit, a few things came to mind that I think would improve the building experience:
Showing measurements (width and length) when laying out floor plans
Using a general ‘removal’ hammer to designate parts of a building that should be de-constructed
Assuming there’s a resource-cost for buildings: It felt like it should be higher… I had a full stockpile of wood and not a single piece was used during construction of a new building