Flag Weight: Parent support for draggableviews module

I have setup Flag weight and draggableviews according to the documentation available.

Once I completed this everything is working fine, but I require the use of parent sorting for hierarchy view.

If you use the draggableview parent variable with out a relationship it shares the variable for all users, and this won't work, and when you try to use the draggableview with the flag:user relationship it goes always breaks the structure.

I was going to attempt making my own handler but I think it would be better to piggyback on the flag weight module.

Does anyone know what this would involve? Would it be as easy as creating another field and a new handler? or should this be it's own module?