What could be the message for the mentees when they are redirected to the new mentors? Something like: Your mentor [old_mentor_name] is not available now. We invite you to ask your questions to your new mentor [new_mentor_name].

Should we message them? It could it be a source of confusion? Maybe a notification would be better instead?

In T244728#5865488, @Trizek-WMF wrote:

Should we message them? It could it be a source of confusion? Maybe a notification would be better instead?

Yes, a notification will be less confusing for them.

I don't think that we should notify people who have never contacted their mentor.

That would make vandalism of that page very disruptive. We'd probably need a safer mechanism for mentors to list themselves, first.

Wait, couldn't you remove your self from the list because you don't want any NEW mentees - but you are fine with the ones you have?

In T244728#7369032, @Xaosflux wrote:

Wait, couldn't you remove your self from the list because you don't want any NEW mentees - but you are fine with the ones you have?

There is a way to do what you describe: have a separate list of mentors that is not used to pick manes to assign to mentor, but that allow people listed there to be mentors.