Hey, thanks for the detailed feature request. It’s rare to see an ask laid out this clearly, and extra thanks for splitting it from the multi-root workspace topic, those are really different things.
The request is logged and in the right category, so it’s open for community votes. The more upvotes and comments, the better for prioritization.
Also, in case you haven’t seen it yet, there’s a related thread about a quick project switcher in the title bar with search across recent projects: Add a quick project switcher in the title bar (recent projects + search). The scope there is narrower than yours with no state isolation, but the core problem is the same. It might be worth adding your vote there or merging the discussion.
I can’t share a timeline for this feature, but the request is on our radar. If there are any updates, I’ll post them in the thread.