OK, that might sound like an odd thing to want but hear me out... Say you have a forum where people sell stuff. It makes sense that you don't allow editing of posts in that forum - there can be arguments if someone changes the description of their item after it is sold. But what would be useful if the seller could change just the thread prefix from FS to SOLD. I don't think this possible with permissions as they are but would be really nice . Is there a way to allow this?