I have personally found the forum chatting difficult to keep up with seeing as all the messages are intertwined. I was thinking if we have a chat prehaps like Facebook in how you can see a certain persons messages without having to go through the ones you don't want to delete it might make things a little bit easier.
Another thing that'd be great about this is you wouldn't have to check the 'save a copy' box to save the message you wrote instead it'd be all in one place.
I'm not sure if this kind of think can actually be changed but it'd be a great touch.
I had a quick look around for a similar topic but haven't found one, please link me to it if you have seen one.