Points well taken. My experience with postal addresses is limited to probably only a handful of instances of dealing with international addresses, the remainder being strictly US addresses. I realize my example was probably very simplistic/incorrect, but it was only to get an initial idea across. The USPS listing I based what I have played with so far upon had 3 types of address components [state or province, address unit, and secondary address unit], so what I had in mind was to only provide a few conversion functions (assuming that there might be other types of components pointed out later) that the user could then call as they saw fit on a portion of the entry as they needed.)
I very much like the idea of the dispatch interface and country-specific modules to make it more flexible (but will also mean I will have to learn how to do such a thing as well :-).