1. Make the group chat usable at log-in, able to click the group chat tab even if a group has not been formed yet. Although we still are not able to send messages in that window unless we're in a group, it'd be nice if we can still get notifications if we were whispered through it. I'm sure many of us have asked others to form a party, then immediately leave right after just so that we wouldn't miss any whispers.
2. Allow whispers visible in Custom Chat. Most of the time I miss a lot of important whispers because I'm always on custom chat and I'm sure a lot of others do as well.
3. Make the notifications from the chat window tabs more noticeable or flashy, they're so small that I miss them most of the time.
4. Add an option to enable a 'System Messages' window so that the General Chat doesn't get spammed when mining, foraging, crafting, etc. Also have a second tab to the window so that we can see if an admin had main an announcement, such as a server maintenance in case people were afk and missed the broadcast.