Any countries that have multiple tax schemes and need to account for them would benefit from being able to make some catagories like a "Grouping" catagory. It would only be used for that purpose so is not neeeded to be displayed in the ticket. As well as the no tax catagory because it never shows a value. A simple switch "Hide from ticket" would be an excellent feature in the tax catagory section.
If you want to hide a tax from printing that = 0 you can edit printer ticket
how would it be for version 1.4.7?
Nobody can adapt for 1.4.7?