I believe that tablets of law are one of the most underestimated items in the auctions. Thinking on that, why don't we give a new functionality to this item??
The CP production could follow the loyalty of each village. As we start the game with 100% of loyalty, we produce 100% of CP each building provides, so no changes at the very beggining of the game.
By using the tablets of law an raising the loyalty of the village, we could increase the CP production at the same ratio.
With that, these items will become far more interesting at the early game.