Many to many Wizard Link Attributes

When setting many to many part of forms i miss two things:

  • assign a value to a linked attribute (currently we can link to a field or set data, ip , database default. )
  • assign a value from a lookup field. From the lookup table we can assign only id, but there can be more useful fields to take. Can lookup be extended with more than two fields and these fields be used in the attribute linking as well?

I think these new feature will make many to many feature much more useful in real scenarios.