Option to show only posts from the OP in a thread
To make it easier to read and re-read large WBA threads, rather than sorting through potentially hundreds of replies to find old chapters. This would be particularly useful if the thread isn't bookmarked properly.
You can already do this by using thread searches.
Search this thread -> advanced search -> Search by User Name
It wouldn't be terrible to add a short cut though. Maybe a tickbox 'Show only posts from OP'