This is a rather interesting idea.
But a bad idea in economics.
Giving a curio that people sought after from a king would
A)make hermit more behind.
B)make "a single" curio more sought after then others pushing others out.
C)the balancing of kingdom curios could be easily off.
D)give a person (the king) an unfair advantage with being able to bribe/get ahead with a single item.
~~~
Now I dont mind this much. But this would really really need balancing. Not just for that but they would also need to give other players stuff~ kingdom dick sucking is not ideal for some. Special in the currently meta of the game where only one grand kingdom is really active. (I know there is a few minutes ones)