Multi-Level Select field - Values - Constructor

Hello, is it just me or my (older) browser? The constructor edit view seems to have multiple issues:

Issues

• Tooltip on button shows strange numbers?
• Multiple clicks on edit icon (pencil) shows HTML code
• Ordering and Value display seems to change on closing and re-entering the constructor.
• Adding deeper levels with +icon seems not to work. Values get the same level as parent item.

IMHO, the interface and editing is a pain in the rear. Sorry, but I can't create a simple structure like the one from file import example! The UI/UX is no timesaver... "Control Enter" to leave and save current input?! Close window by clicking (x) to save and leave the dialog?

Suggestions

In regards of usability and Joomla's switch to jQuery:

• Simple textarea with special markup. +, ++, +++ As seen in file import example.
• Replacement for current input: jqTree
  JqTree is a jQuery widget for displaying a tree structure in html. It supports json data, loading via ajax and drag-and-drop.
• Fancy input for extreme complex structures: jQueryHorizontalTree