One of the database fields we use in every email is the highest_usd_amount field. It allows us to customize the ask, button amounts, etc based on the highest past gift. But because the amount is in USD, we have to set up a bunch of complicated rulesets to convert the USD amount into its foreign equivalent.
I'd like to add a highest_native_amount field to the database, so that a rule like "If highest_native_amount is between 5-9.99, display '10'" will never need to be dynamic based on conversion. This would really simplify my life :)