Can you share working Rise file with other developer?

I have some questions about the Teams aspect of using Rise. We still haven't built anything in Rise because it's been kind of limited, and we're still waiting for some functionality that would make doing translations in Rise courses simpler, but as I'm brainstorming projects we could do, I have a few logistical questions :)

1. Will there be a way in the future to work on a course that doesn't have to be 'shared' but that is just in the Teams dashboard area? (Right now, the way it works reminds me of using My Drive in Google, where files are owned by individuals, vs. using the Team Drives option, where files are owned by the company/team and admin.) It seems that it would be more efficient and logical to have a true shared workspace instead where we can all login and see everything, instead of having to share each thing with one another. No? 

2. Right now, it seems the best way to collaborate will be to literally share every single file with every single team member. (A bit cumbersome but doable.) So how would you handle it if a team member has to leave for some reason? Let's say we have a team of 5 people. And Person 1 creates and shares a course with everyone else. A year later, Person 1 leaves the company. When we replace that person in the Team dashboard with the new hire, what happens to the file that they owned/created?

3. For anyone who works for a company that creates off-the-shelf elearning or elearning that gets delivered to clients (i.e. NOT delivering elearning internally at your own company), can you share some example use-cases of how you've best utilized Rise, and the Teams collaboration efforts?

Thank you!!!!