Sounds good, I've liked it. But even more, I'd like this option with a New Threads filter - meaning a New Threads filter that wasn't restricted to only unanswered threads, but included all new threads by date or other criteria (meaning not new threads and posts), whether "answered" or not. Really easy to set up such things with IPB's activity streams: hopefully the XF team will look at adding a similar system in 2.1. One can hope!