The current flair has a site icon to the left of the username, forcing long names to be trimmed. Why not move the icon to the free space below, so there can be more space for the display name?
(it doesn't have to be there; there's plenty of room for it at the bottom).
/about page made me notice this - icons' dis-alignment felt a bit weird. What it looks like now:
What it would look like with the icon repositioned: