When assessing a Moodle plugin it's not clearly obvious if it supports Workplace. A few related suggestions:

1) Adding a filter to the top to include or exclude workplace

2) In the stats show a breakdown of Moodle sites vs Workplace

3) Same with the graph by version - which I also think would be far better as a bar graph and not as a pie chart.

4) All of the data above can be inferred from real sites saying it is installed, but it may also be useful to have an explicit bit of metadata in version.php which declares support for workplace, and possibly its versions.

$plugin->supported = [35, 401];

$plugin->mwpsupported = true / false; // Maybe something like this??