In your latest video, you mentioned trying to strike a balance between realism that's very complex and fun easy game play.
I feel it's 2 different audiences. You're not going to make anyone happy if you try to do both. Tie it into a difficulty selection. Some people will want ultra realistic, others will want to skip stuff like transporting equipment.
On the ultra realistic side you could even have it so the player has to transport the building materials to the site.