Questions regarding the new Space

I'm excited that Evernote has released Spaces, which I think can hopefully replace Notion's home view. I have a few questions since I'm not sure whether it's originally supported but currently buggy or it's not supported

• Is it possible to add existing notebooks and notes?
• Can a notebook or note be added to multiple spaces?
• If I create a note within a Space, can I see it in 'All notes' view?
• Can I customize space like Home? (Order of What's new, Pinned notes, etc.)

I would appreciate if anyone could share his/her use cases too! Would help in brainstorming how I should use it to boost my productivity. Thanks!