The ability to view reports in non-base currency, but secondary system currency instead
We would like the option to view reports, such as annual forecasts etc in a currency set up on the system besides the base currency. As you can't change the base currency of the system in production, if your business has moved to a different country you're stuck with all reports in a currency you no longer use.
I'm sure this would also be useful for bigger companies with offices in different countries, where management would like to see reports in their local currency. Even if it's just for transactions in that specific currency.