Can we add the additional fields to relationship tables?

Relationship tables currently do not include enough fields for auditing. 

For example account_cases looks like

The table is missing

  • date_entered
  • modified_user_id
  • created_by

What is the level of effort to add the missing fields to all relationship tables and have the information properly populated?

Is this a feature request?

  • And this is even worst when you considered a relation with "additionnal data" entered / modified by someone (for instance the role of a contact for an opportunity).