Hi all,
Providing partial answers to some of the questions raised in this thread:
Regarding the hard-refresh-upon-approve/reject issue in the tool's front-end: this has technical reasons that I will hopefully elaborate in the GitHub issue (https://github.com/google/primarysources/issues/58). A reminder that the tool is meant for ad-hoc usage with manual source inspection, not mass insertion.
Regarding the numbers from the paper, Thomas P.-T. and Denny V. are the core contacts.
Regarding the usage dashboard: Sebastian S. is running it in the tool's back-end. Note that the top-users stats are currently debated about (https://github.com/google/primarysources/issues/67).
Cheers, Tom