In “Royal Concerns”, replace

Each King takes turns having a Royal Concern (with the first one decided at random by one of them)

with

Each king can have a Royal Concern

and

Doing this ends the current Royal Concern, and the following King shall start a new Royal Concern. At their leisure.

with

Doing this ends this Royal Concern, and the same King shall start a new Royal Concern at their leisure.

and add the following:

At any given time, each king can have at most one Royal Concern active.

If this proposal is enacted, any king may start a concern, provided they do not currently have a Royal Concern active.