mages added within the Navigation module (for example mega menu banners or feature images) currently have no way to be tagged for GA4 promotion tracking.

Page Builder already has this. Clients can set a promo name against a banner, and it fires view_promotion and select_promotion events into GA4 when the banner is seen and clicked.

We'd like to see the same capability added to Navigation, so promotional images there can be tracked and measured in GA4 in the same way.