Hi,
Your solution is what I have done for now (product categories items with svg icons before), but it’s clickable.

My problem is:

First level must be non-clickable links, so it means “custom links” with font-awesome icons (wich are uggly)

Solution 1 :
Is there a possibility to put flaticon icons in place of font-awesome icons before a “custom link” ?

Solution 2 :
Is there a possibility to make a “Product categorie” link not clickable ?

Thanks a lot.
Fred