Comparing historic variable translations
It should be possible to compare several historic variable translations. Considering the relative simplicity of most translation strings I'm not considering this a very urgently required feature.
To make this as easy as possible using the SortableTable framework some kind of extensions have to be implemented first though. Instead of just checkboxes for multiple selections, functionality is also needed to select 2 (different) items from the list and compare them. This should not compromise the functionality of the regular selections which allow multiple deletes, moves, etc.)