Description of your request or bug report:
This is a different suggestion from All Languages Page, although along the same lines: this is referring to the stats of individual users, rather than the collective site stats.
I think having overall stats for users learning more than one language would be useful - it could resemble the current stats pages, but focus on media consumed by language (for example, the books/pages read by week/month/year could be a stacked bar chart representing the different languages).
Trello link:
