Why wouldn't mentors just keep track of this themselves, by creating a list of their current/former mentees?

I had said as much in this comment, and I agree that mentors can probably take care of tracking that one their own.

That said, I believe I've misinterpreted the request. On a second read of those comments from Anne, I think she is actually asking about is some way to globally view all matches in The Co-op. That feature would definitely be nice and useful (e.g. it would provide a holistic view of the space, ), but I'm not sure we have the mechanisms in place to create such a page right now, do we?

That I think I can do at reasonable cost. We are tracking matches in a db table, so I can write a script to output an updated list in wikitext, like I used to do for Teahouse invites here: https://en.wikipedia.org/wiki/Wikipedia:Teahouse/Hosts/Database_reports And since it's directly related to making matching work effectively, so it falls within my original set of duties for the project.

BTW, I un-assigned myself from this task a few minutes ago. If the solution I propose above works for you, I will re-assign myself to the task, but in future if there are new requests, best to add me as a subscriber rather than an assignee. Once we decide what needs to be done, we can decide who will do it ;)

@Capt_Swing I think that would work very nicely, so let's go for it. Would the list be comprehensive or would it need to be updated in a report-like manner at the Teahouse?

And thanks for letting me know about the conventions around assigning tasks-- I'll make sure to stick to the subscribers list for now. : )

@I_JethroBT I would probably set HostBot to update the list once a day. I'll put in a bot request for that once the code is working just to keep everything proper, but I don't anticipate it will be controversial.