as a user i would love to restrict myself to not overcommit myself beeing a volunteer. just brainsorming, inspired by sarah mentioned in the links below: i would love to specify a time or number limit for editing, reading, and writing mails. if reached there is an action, like a warning on top of the page. if i write too many mails without editing the mailing system sends me a notification i should consider to write less emails end edit more.
see:
https://meta.wikimedia.org/w/index.php?title=Tech&oldid=15386522#Request
https://lists.wikimedia.org/pipermail/wikimedia-l/2016-February/082675.html