Once the game goes live, any tribe area based skill like Architecture, Masonry, or Terraforming will be limited by the amount of work you can do in a tribe's area. There is only a finite amount of space, and once you are done building, then what do you do?
A smart tribe will assign these tasks/skills to only a couple of members, though important, the space restrictions will limit what can be continuously built in a tribe's area.
For solo players, I can't see them wasting their crafting skill slot in the beginning on woodcraft, masonry, or architecture as these are group related skills.