I made a plugin to more easily and quickly (imo) work with booleans in an organized manner in 2.8 if anyone is interested.
If it doesn’t activate properly, try renaming the file to boolean_collections.py
You have to set up the hotkey yourself. Go to Edit, Preferences, Input, 3D View, Object Mode, Object Mode (Global), Add New, chose a key (I use E), type wm.call_menu_pie in the text box. Then a new text box will appear under where you choose the key. In that text box type object.boolean_collections.