Hi,
Stupid thinking may be, but could there be some conditional working between the mapping?
So say for location_cck, the location_country field needs to be the 2-figures iso-code, say US for United States.
But a lot of feeds just have something like "united states". Could may be something like, for this field, if the same as a database field A, use database field B for the mapping.
In this example the countryname should be the countrycode to have correct working of cck_location.

Maybe this is possible with using the rules module?

Thanks for considering this.

Greetings,
Martijn