Thanks for chiming in, I looked at the the stackoverflow link and the fiddle. they are useful and contribute to this discussion.
Do yo want to show an example of a few models demonstrating this deep nesting approach via the model. Both links demonstrate the problem but non shows an example of the solution.
I think adding some examples here will make this page very resourceful, since we have some examples here and 2 fiddles, one using itemcontroller and another fiddle using a different approach. Yours will provide the 3rd approach.
Cheers