Ctrl+G should be bound to Move to Collection > New Collection, not Create New Collection

[1D_Inc]

Interesting proposal)
Also, grouping, cumulativity (when some object is placed in different collections) and other system design problems was discussed in Layers Maniphest.

Layers maniphest

This is a topic about hierarchical structural/navigation issues in Blender 2.8. Here are the comments of a specialist who deals with unlimited hierarchical structures every day for several years and even created a functional framework for advanced work with AutoCAD layers, including cross-recursive parsers, for processing them in hierarchical structures of any complexity. We will talk about different hierarchical systems, their issues and different existing solutions, such as Layers, Groups, …