Right now it is too painful to read the chat with everyone having the same font color and the small font size. When I saw a couple different font colors, it was nice. Just think how nice its gonna be if the chat channels also have different colors.
I think what will be cool is have 5 or 6 total font color options, only have 3 unlocked, and we have to unlock the others.
Font size is too small. I think have an option to increase the font size will be nice. Like maybe a couple of sizes, two up from the default size. So to you, everyone's font will look bigger.
@(username) when clicking a username will be nice too. Some usernames are long so it can be hard to talk to or respond to someone without having to whisper them. So if someone wants to respond to me all they got to do is click on my username and then in the box where you type your message @Bareleon appears there then they can type what why want to say.
Right now, it gets stale and boring really fast in the chat. All these improvements will be a big help at least imo. Also right now I have to use the magnifying glass on my computer to help see the messages.
At least blizzard brought back our username when we send a message instead of saying "You" to the person who sent the message, so that's good.