each time we create a new option we have to clic "submit" and the page reload. It would be better to avoid so many actions. Per instance in the create log files you have to do it several times.
But where it is really annoying is with the matching of custom fields. I have made with around 50 fields for a csv and each time you have to submit and go back. I believe that anyone creating the custom fields will mainly write the right text in the input field. In case of error we have the delete option just below so we can delete it.