I have given up asset container for multiple scenes. It really does my head in. 
Tried to put together in playground but every time I switch the scene using scene setter playground hangs.
I have found old thread in html5gamedev forum talking about serialising objects from one scene and loading them onto the other, but that’s seems an overkill.
Will try to revisit it tomorrow again.
Perhaps we could explanation with a playground example of how to do it in documentation.
Any more tips to get me ready for round 2 would be appreciated. 