Just a thought - we’ve had a spate recently of zombie threads being refreshed. It’s difficult for users to note the date at the top of the thread, so on occasion they will find they are responding to an issue that is years old. If a few users do, it then appears in ‘Trending’ and many more users are caught.
If MN had a ‘Zombie’ emoticon such as this 🧟♀️the first user to spot that it is a zombie thread could mark it as such in a very visible way.
Is this something MN might consider?