Thanks for the comments, Tom. This thread is the right place to vote for this suggestion (it doesn’t look like you’ve voted for this yet - if you can, that’s the best thing that you can do to help push this up the priority list). See here for more information on how we manage feature requests and how to vote for them.
I also really like the suggestion of you being able to define your own “named HS codes” so they can be picked from a list rather than entered manually each time. We’ll be sure to include that in this feature when it’s implemented 