:-D I use DOpus 5.82 Magellan II in Workbench replacement mode, and I couldn't be happier with it. To see that it may be included with AmigaOS 4.0 is good news. In my opinion, at least some of its functionality should be implimented as standard, though not necessarily everything.
;-) Mostly I'm thinking of the Listers, and the Filetypes editor.