I just finished developing and deploying a plugin to allow users to be at mentioned in the forum activity (both within the atto editor and within in-line responses). I'm looking at next steps (commercially and logistically) to release the code more publicly but would be interested to hear from anyone interested in it. It's a clean local plugin with various config settings e.g.
enable/disable at an activity and site default level
capabilities to control users who can mention, be mentioned and configuring mentioning
options to limit mentions to existing forum subscribers
It respects settings like showuseridentity, hidden user fields, permission to view profiles etc. it's even reasonably GDPR compliant in that it hides the names of deleted users...
The solution also supports sub plugins to enable mentions in other contexts - it already supports course summaries and section/activity introductions. I'm particularly interested in building out support for comments and chat...
