Duplicate View Layer/Add new empty layer

Problem: I have a big scene file. Tried to divide it into different scenes, but that didn't work because I need to render many objects on separate layers. Every time I add new view layer, it enables all the collections and blender becomes unresponsive for minutes. That's like one level below undo slowness.

And I am using threadripper platform, with all bells and whissles, so it's not about the hardware.

Suggestions for possible solutions:

A) Ability to add new View Layer, with all collections unchecked.

B) Ability to duplicate View Layer, with only same collections enabled.

Option A would make a huge difference.

Thanks!