Ignored users in "last unread topic"

[Meddysong]

A friend has just pointed out that is that it's possible to click "mext unread topic" and be transported to a thread in which the only additional post since you last read it is by an ignored user.

I don't know how feasible this is to implement but it would be handy to differentiate between a topic which has unread content in general and one in which the only new posts are ones which you wouldn't see anyway because they've been posted by users you've blocked.