I often run reports to gather specific teams' data across multiple schedules into one easy-to-access place. I realized recently that report users cannot @mention people in comments, even if those people are shared to the base sheet being pulled into the report. Instead, the @mention must also be shared to the report.
I specifically want to keep the report sharing to specific teams, and I want to eliminate or reduce their need to go into the base sheets/schedules. It seems like if someone is shared to the base sheet that feeds the report, then a report user should be able to tag them in a comment. Since it's not possible, I would love to see this feature upgraded!