Defaulted upper case characters in address fields
The first character of each word in all the address fields (and all alpha characters of the postcode fields) should automatically format themselves to be upper case if they were not upper case already, to save you having to do this manually. This is the most likely formatting requirement for address fields so it would improve efficiency. (If lower case is required - e.g. I think the French like to put "rue" instead of "Rue", this can be done manually).
John Wood commented
This idea is totally stolen from Maximizer!