Sir Derf
Adept
Comment on the middle idea that artifacts have chapters and upgrade buildings to their chapter.
My thought - not necessary. Older buildings are older. The game has a mechanic to upgrade older buildings that you want to hold onto and doesn't need an additional, expedited route. Especially one that would be as overpowered as suggested - The typical Evolving Building is 16 squares, in your example the single Artifact would have the equivalent power as 64 Royal Restorations (or 6+ Blueprints)
My thought - not necessary. Older buildings are older. The game has a mechanic to upgrade older buildings that you want to hold onto and doesn't need an additional, expedited route. Especially one that would be as overpowered as suggested - The typical Evolving Building is 16 squares, in your example the single Artifact would have the equivalent power as 64 Royal Restorations (or 6+ Blueprints)