I think you did add the post subject in the sprintf() method, but is unused in the language string.

right, i just moved the post title at pos4, but thought it might be TOO much information in a thread, maybe creating a setting for it would solve the dilemma which one someone would prefer to use

Since people report posts and not threads, I would say that the post subject is more reliable (say, people actually change the post's subject).

Also, it seems this will generate a warning if $thread or $post aren't set. You need to move the full line into each switch case, as well as use a different language string for each case.

ouh yeah i missed that point, our board is strictly moderated so we dont have any, nor had any profile reports but therefore more thread reports regarding to board subject but you're right will revamp to suit all use cases!