The ambient screens are gorgeous! Check out
Ambient gallery to view them. The menus seem to need updating but it is an improvement. Some icons at the top of the window for Going up a level/ Cut/Copy/Paste and Filter could make all the difference.
I think you might be suprised by how many users are still using the normal Workbench. I tried Scalos but its a nightmare to configure. I did try the version of Dopus5 that came on cu amiga cd but thought the commercial version was way too expensive. MBench just crashes for me.
Didn't HyperIon have a deal going with GPSoftware over Dopus5? I remember Greg Perry posting here some months back. It would be ace to have that as the default workbench!
[edit: had submitted before previewing]