A little too US centric. With a bit more effort it would detect all of the G20's post code formats and fill in the country name automatically. (Sparing me the frustration of trying to choose between Switzerland and Swaziland in the 6 point font you chose for the pop-up.)
Also, don't be a dick. Have some empathy for your reader. Half of the UI designers you are talking to don't have a choice in how it works. Their colleagues chose some stupid framework which they can't customize. The other half didn't even want to do this task, they just got it assigned to them by some PM they don't respect (who, in turn, does not respect any advice coming from UI designers), and they are doing the minimum they possibly can while applying to other jobs that suck less.
Also, don't be a dick. Have some empathy for your reader. Half of the UI designers you are talking to don't have a choice in how it works. Their colleagues chose some stupid framework which they can't customize. The other half didn't even want to do this task, they just got it assigned to them by some PM they don't respect (who, in turn, does not respect any advice coming from UI designers), and they are doing the minimum they possibly can while applying to other jobs that suck less.