At the moment the possibility to track or analyse language connections is a bit lacking, for example for analysis like "does every German-language page have an English counterpart" or "how many pages are German-language and how many are English-language", i.e. a simple possibility to display a number of pages within a space.
Or also a possibility to export the overview that exists for the Language Manager in the Space Administration, e.g. in a csv or Excel file with simple means.