With the recent Code of Conduct changes (see the blog post, the FAQ), and even before this round of changes, there has been an increased attention on users interacting respectfully with each other. However, moderator tools have not been kept up to give the diamond moderators insights into how users have been interacting, leaving us in a tough spot. We must either become investigators, digging through activity of two or more users, or in a position to ask a particular user to dig through their own history. The latter option could be extremely difficult for the user, depending on the nature of the interactions. The former can be extremely time-consuming for the volunteer moderator.
I propose a tool that accepts the input of two users on a given site and returns information about their interactions. This would be all questions in which they interacted (within the question, one or more answers, or comments), chat transcripts for times when they were in the same chat room parented to the site in question, and a list of sites where both users have an account so questions can be directed toward the moderators of those sites. Some elements of user history - avatar changes, user name changes, and about me changes (including when it is changed by importing from another site), should also be indicated for both users, with diffs if they are available. If there are ways to expose suspicious voting patterns or other data or abstractions over data that capture interactions, those would also be useful.
In order to respect privacy of our users, the use of this tool should be logged much like how moderator access to PII is logged (and there's a message stating as such). Staff should be able to see cases where a moderator looked up the interactions between two users to see which moderator performed the function and what two users were searched.
I believe that having such tools will greatly improve a moderator's ability to address concerns where one user is made to feel uncomfortable or unwelcome by another user. We can learn more about their interactions to appropriately find and address instances of poor behavior and make better informed decisions about how to protect our communities.