Today we have much more Folders and subfolders than 10 years before.
I the AmigaOS should only give a simple solution without 1000 functions, for this we have Software like DirOpus. Just a good browsing in the structure would be nice.
Why Reaction: we can build Layouts and add/remove Contents. So we could do a config for each preference so we also could remove it to the current state (or just hide some of the new "toolbars").
I also do much in making Themes for AmigaOS and it is not easy to handle because every prefs (text view, amidock, ringhio, contextmenu etc..) has its own Setting for visual style (this is a new thread


Here a sample Image how i would implement it (click for full Resolution)

I would prefer a Navigation bar on top of the window:
left -> go back or forward, drawer up (sense: where can i go)
middle -> path (sense: where i am, write where i want to go)
right -> visibility things -> show places, show Icons/text (sense: how it Looks -> just some (max 2) of often used things -> less is more

Right Bar, Places???:
A Place where we can Switch between devices, assigns, Bookmarks/links (sense: Switch fast to a place where you want to go)