Please take a look and, as always, send feedback via phab or irc (#wikimedia-analytics)
The tasks we have in our radar for wikistats2 are metrics "per family", that is. "edits for all wikitionary projects" or "unique devices for all wikipedias".
Some of these metrics are already available in the API. See for example, the daily number of edits for all wikitionary.org projects for August 2018, made by registered users on articles (pages in content namespace):