The character tab/deck of the sidebar shows all sorts of information about your font: Family, size, bold Y/N, Italic Y/N and others. Many of these - specifically, the ones I mentioned - are actually defined for each language group: Western, RTL-CTL and CJK. But the tab/deck does not let us switch between the three language groups. There should be some control for doing that. Possibility (not necessarily the best one): A button for switching to the next language group according to some cyclic order.