Adding more data to the "commerce/cart/update-cart" action Is it possible to add additional data to the "commerce/cart/update-cart" callback? For instance, we want to include an Asset field so we can populate a cart modal with the item's image in one call?

Or is there a better way to tackle this type of functionality?
You could either extend the craft commerce update-cart controller
or get the specific fields via element-api what will unfortunately result in an extra api call.