Thread -> Unread when all posts are deleted?

[Luggruff]

I know this might not be so very useful, or at least not often used..
But today when I checked a thread it contained 3 off topic posts, and nothing more. This will draw attention from the thread itself, of course, and if I just delete the posts, the thread might have passed the amount of time for it to be likely to be read.. or at least it won't have the same fighting chance to even be read again.

So would it be possible for someone to make a system wich marks the thread as UNREAD (resulting it to go on top again in the forums) if ALL posts except for the original one has been deleted (even just soft deleted).. Giving it a brand new start and getting it a better chance to be noticed or answered to?

Thanks!