Formatting shows Currency for samey-locales
The switch to BrickMoney has the positive impact of adding a currency for the non-site-default locale - so for a US site NZ donations would be prefixed with NZ.
However, it turns out it is pretty common for NZ sites to leave the site language as en_US as no other English variants are offered without the translation install...
We discussed this & think that the remedy is to add a new setting
format_locale
If set this will be used for money formatting INSTEAD of thousand separator and decimal separator - ie those will be determinted from the format_locale and we will hide those settings in the UI and deprecate them. Over time we will encourage people to switch. This setting can also be used for dates