Add to rule Currency a sub-rule named Currency Authority:

There is an Entity in the game named The Currency Board which can take actions when allowed so by a rule. When The Currency Board is allowed to act, any of its members can act on its behalf. The current members of the Currency Board are listed in this wiki’s [[Currency Board Roster]] page. Members may be inducted to the Board by the Emperor, which can edit the Roster’s page to reflect so.

Add to rule Currency a sub-rule named Currency Value:

* The total value of all Squares in the World, calculated according to rule “Property” shall be called value “L”.
* The total amount of B$ held by each Player, plus the Jackpot Pool shall be called value “B”.
* The number given when dividing value B by value L (B/L) shall be the BL index.
* The value C, to which B$ value is pegged, shall be equal to 40/N, where N is the number of Squares in the World.

The value (effective purchasing power) of the Blognomic Dollar (B$), as measured by the BL index, shall be pegged to C times the value of all land in the [[World]].

To ensure that, The Currency Board may, once every Friday, choose to adjust the amount of B$ in existence by multiplying the amount of B$ held by each Player and the Jackpot pool (rounding results to the nearest integer, as per normal mathematic rules) by a fixed factor. This fixed factor shall be the result of the division of the value C by the current BL index (C/BL). The amount of B$ granted to a new player, as provided by rule “Currency”, shall also be adjusted by the same factor.

Create a page named “Currency Board Roster” in the Wiki and add the Emperor to it.

Example: Current BL index would be, now, around 1.460, while C would be around 1.905. So, the currency board could adjust the amount of money held by everyone by 1.304.
The “C” part is to allow for inflatable real estate, as per Rodney’s proposal.