Agreed. Also Ctrl+Select for multiple scattered selections like it is a standard on every OS. I’m also not sure if this is part of the “industry standard keymap” changes planned.
Currently if you click Ctrl+Select, you enter a Rename mode for the second object selected instead of adding it to your selection. While Industry Standard is Selection+F2 to rename an object. which I think should be the norm here as well.
I agree with this as long as you first are clicking on an empty area first (like the area below or to the left of the collections). If you click first on an item and then drag, current item-drag behavior is great and should not be touched IMO. Example:
(minus the little corner triangles for expanding/joining areas)