By the way, I totally left out one very important thing. Let's see if you guys can catch it....
***I expect no less than five cool points for avoiding using the word "amazing."
Once you have a default value, you probably want to put it in preferences or in the admin section. Are we saving the config file on the local computer or the server? Will the changes be global to all computers or local to one?
It would need to be evaluated whether the upgrade would cause any problem with people upgrading from more ancient versions of AC such as 4 or 5.
Of course once the beta has been evaluated, a final version would need released, emails would need to be sent. Any quirks noted on upgrading would need to be sent out to the help desk.
To get to the point where the programmer has been assigned the task, it would have required a management decision that would have required probably several meetings where it was put on the agenda, fleshed out as the priority and estimated completion. Decisions would need to be made whether it was consistent with the longer term plans of the import item area. You have now added multiples of time involving more people.
Not sure if any are the ones that you were intimating, but these are some of the other areas I could see additional work needing to be evaluated.