thanks for this proposal Marie,
if someone is looking for an easy to do task: there is a lot of statistics in Fedora
translation platform, anyone could give it a look and make use of it. Just dig in the data
and request feedback here if needed.
if you want challenge, real challenge, there is a huge amount of data in
languages.fedoraproject.org you may conpare latest releases and try to highlight key
points (be careful with conclusion, simply describe what you observe and asking question
would make it simpler)
--
Jean-Baptiste