Earlier quoted context omitted.
Rewrite Finder, again. It has stupid limitations — files in use, can't put item to trash while trash is emptied. Still has only read-only support for FTP, locks up with WebDav, can't browse ZIP, etc. Copying in Finder is much slower than with cp. On Samba drive it may need 10-20 seconds to replace 2kb file. It handles permission errors erratically (sometimes asks for permission, sometimes fails, sometimes asks and fa…
While I agree about Finder getting the shaft, have you checked out Pathfinder? http://www.cocoatech.com/
For me it was quite a disappointment because one of my main beefs with finder is the atrocious performance even on modern hardware and especially when network mounts are involved. Sadly pathfinder turned out to be even slower!
I don't need zillions of buttons and special "features". First and foremost I want a lean and fast view into my files, everything else is secondary.
As much as I hate windows; up to this day the windows explorer remains the most bearable graphical file browser that I have used.