What does it mean by 'tier requirement'? Does it mean the level I have to be? The tier of the building around the workspace?
If I pick Lavish, will I have to upgrade from a tier 2 building to a tier 3? If I pick Frugal, can we downgrade the building? What impact does 0.2 have?
I kind of need to know before picking my level 6 Masonry talent..