Commented Feature: Showing connecting lines in TreeView [851]

Is there any plan to provide an option for showing connecting heirarchy lines in a TreeView like in a classical WindowsForm TreeView? Can this be accomplished somehow through modifying the TreeView/TreeViewItem control templates?
Comments: ** Comment from web user: sathyafeb7 **

I work in PLM (Product Lifecycle Management) application. Where we need to see the list of products connected to another in Tree view logically. So i see a definite need. Such as Connection Lines, multiselect, drag-drop