It's pretty easy to replace Nautilus with Nemo though (the Cinnamon fork version that emulates the old Nautilus).
The Gnome team would be wise to listen in on the feedback from the community. If they want a community that is. They seem to think that this "Gnome brand", "Gnome identity" and "Gnome platform" is the most important thing they need to concern themselves with these days.
Not being able to drop a shell script into some place to make GUI file management easier is a regression. (I say "some place" because when I was using this feature, it took forever to find the right place as it changed between released/distributions and I had to experiment to find the right set of env vars that are set, because docs were lacking).
Why don't I get to decide this for myself?