at the cost of renaming perhaps the most iconic part of MacOS
There are two things I can think of offhand that survive from System .95.
One of these is the Apple menu. The other is the Finder(although I suppose you extend the concept of the fixed menu bar going all the way back to there).
In fact, up until System 5ish it was possible to run different versions of System and Finder. It was either System 4 or 5 where they were unified into the same version.
I would hate to see finder go away, and not just for historic reasons. I have "lived with" a lot of OS X(sorry, macOS) changes that I didn't like but deal with. Trying to replace iPhoto and Aperture with Photos is one of those, although ultimately I'm happy that I decided to concentrate on Lightroom.
Simplifying one of the fundamentals of the OS would not sit well with me. I want complete and full access to all my files-after all that's why I use a computer and not a tablet for my main computing. I know that I can always still get to stuff through terminal(as long as Apple doesn't take that away...) but the fundamental interaction between files in the Finder and all other apps is one of the biggest strengths of the Mac System Software/OS.
Aside from that, after the campaigns to get spring loaded folders in OS X, which happened in 10.3, I'd hate to see all that hard work go away
. Yes, I do use spring loaded folders.