It can be a pain in the butt to make a multi-story building especially when you have to keep going down to the first level for more materials.
I suggest a new interactive wall type called Platform Pulley Mount that would have 2 Wood Beams jetting out from the building with Pulleys at the end. Rope would be used to raise and lower a platform that can be loaded with crates.
Materials:
Use Hammer and Wall Plan to create
2x Wood Beam
2x Pulley
2x Thick Rope
1x Wagoner Container
(for added difficulty and realism) +2 Thick Rope per level starting at level 3
Use:
Load Crates onto platform just like you normally would with a wagoner container on the ground outside the building
Go up to the level where the Pulley Mount is located
Right click Platform Pulley Mount > Click Raise Platform
Crates can then be Unloaded to player position by Right click Platform Pulley Mount > Click Unload Here
To bring the platform back to the ground Right click Platform Pulley Mount > Click Lower Platform