Ability to Change Your Profile Name To Display Your IGN in your Profile on Forums Instead of Account

[immortalfox19]

Suggestion: ability to change your forums profile name.

My IGN is FenixFox but my display is ImmortalFox19 (since this is an old account) which I know also has a display for IGN under the profile name on the forums but I'd prefer my account name to be FenixFox instead but cannot do this. Would be a nice change.