I have another idea!
I love collecting things, don't you?
By doing different tasks in the game, for example getting a certain achievement, it would unlock different icons for us to be able to use next to our usernames in the chatbox!
Picture Example: Click!!
Example:
1. As you can see in the picture example in the link, look below in the sidebar and you will see the different icons next to the usernames in the chatbox.
Example:
1. I just completed the seasonal Zilloween (Also known as Halloween) achievements and I have now gotten a notice on my screen that I have unlocked the Jack-O-Lantern Icon!
2. I enter my settings and I select to use the Jack-O-Lantern Icon! Now when ever I'm chatting in the chatbox, the Jack-O-Lantern Icon will appear next to my name!
[The Staff of Tiny Speck is welcome to edit & add to this idea.]