Feature request from a Matomo user:
The current way that Downloads reports are structured just has the URL as the top dimension with all download URLs in subtable rows directly below:
It would be very useful to add the ability to set a delimiter for these reports to make them hierarchical the same as the Pages reports.
(For example like the Page Title delimiter: https://github.com/matomo-org/matomo/blob/4.x-dev/config/global.ini.php#L249)
This would make download reports easier to understand in some cases, but it would also allow sites with many download links to see a larger number of their downloads in the report, since this would currently be limited to the subtable row limit (See #19066)