Currently, a public team can create public projects, but there’s no way to make those available to our entire organization (ie, across all teams), without manually adding each individual employee. You would also have to add new hires, going forward. This is true in practice, and also checks out based on this guide article:
Technically, only Team Members can access a Public Team’s public projects and Team Conversations.
It would be really valuable to have a “global” permission option on projects, which would allow individuals to contribute toward a project without having to join the team. For example, we have a Bug Reports project within our Technology team. It doesn’t make sense for a member of our Education team to join the Technology team, but they frequently need to report bugs.
TL;DR - Globally-accessible projects would allow us to retain a logical structure and team ownership of a project, while granting automatic task-management capabilities to all organization members.