In GeoServer and GeoTools there is a number of open tickets in which users went the extra mile and attached patches (often without marking the jira as containing a patch) or useful data and scripts to reproduce an issue. I would like to prioritize solving those issues first but it's hard given that I can't see a way to search for the number of attachments.
A possible way to address that is to install this plugin: https://studio.plugins.atlassian.com/wiki/display/JTOOL/JIRA+Toolkit+Plugin
which among others allows to sort for number of attachments and number of comments
I think this would be of general interest of any project with a significant number of open issues (which is a common situation in many long lived projects)