Here's a new feature which allows user specific customization.
When a user is logged in, they will typically see their name on the upper right hand corner of the forum (See screenshot):
You may wish to display the user-specified nickname instead here. Other users won't actually see this -- so this is more of a personal
preference type of thing as everyone will typically see their own name or nickname.
If you want to display the nickname instead, go to the app's dashboard and under settings, find Primary Header Menu:
The default value {{ customer.name }}. Normally, Shopify will read this and will parse in the user's own name.
To render the user's nickname, however, you can now use {{ customer.nickname }}.
Shopify doesn't have a variable, but Champ will separately parse this out and will render the nickname based on the user's nickname as recorded in Champ's internal database (the one where they've set under their own preferences in the forum).