Shadow hierarchy in terms attached to hierarchical post types

Via shawfactor on the wordpress.org support forums: https://wordpress.org/support/topic/hierarchical-support/

>Where a hierarchical post type is being shadowed it should replicate this hierarchy in the term hierarchy. I have a rudimentary patch for this working in my own project but it would be a very beneficial if this was in the core plugin.

I imagine this can be done, we should take a look.