1. Naming: "multiple projects open in the window" is too long. How about multi-project or attached projects?
2. Can't remove attached projects.
3. Can't use terminal with a specific project (which has a different virtualenv)
4. This isn't really a ready feature, is it?... How about moving the "attach project" option in the open project to beta until the feature is complete?
Sorry about the rant.
If someone has a solution for any of the question, I would appreciate. Thanks