Another reason @mention would be nice, is the “Replies” view, with threads you have posted in is borderline useless with our culture of never-ending threads, thread derailing, and thread necro. If you've been a member for a while, “Replies” may sometimes be amusingly similar to “Unread”.
The New Replies page should have an option to ignore or mute certain threads. I frequent another forum where they implemented that a while back and it's a great feature.
I know that "please ignore" has a different meaning here on MTo but still