Really could use a tree

Really could use a tree


I've been trying to get a good jQuery driven treeview but just can't
seem to find one that meets my needs.
What I really would like would be a UI tree widget, one that supports
draggables (for moving items around inside the tree) and droppables
(for adding new items to the tree from another source).
I was hoping there'd be one in UI 1.6/1..7 but it looks like it's been
pushed off the list for this release.
But if there's any UI tree under development I'd be grateful if it was
on the list for the next release.