I aggree with you that this is a missing feature. But also notice that this feature is not implemented for other products too.
For example you cannot see or change the variant product varions.
So I suggest there should be more generic approach, that works for all product types.
Currently when clicked on item from cart it goes to product view screen, using only the productId.
Instead we could use ShoppingCartItem and itemIndex and show the product detail plus ShoppingCartItem details -like configuration, variation, quantity in the cart....
Other opinions ?