I think many would agree that a very useful feature would be some sort of acoustic notification when someone replies to a CTA request. It's all too easy to request for a match, then begin reading the forum or manage a team and get lost, not noticing that someone has replied. Pérobably there are many ways to do it, for example a "request box" could be implemented where any CTA request can be inserted, which could trigger some sound. In the same box also replies could be inserted thus triggering the sound again. I don't know how to best implement it but it could be useful.