Hubs owners/coowners can only invite 500 individual collaborators to a Hub. This poses a challenge for customers who have restrictive external collaboration settings that prevent the creation of public shared links, and need to provide access to external users via invitations to collaborate on files/folders. This limit needs to be increased (or eliminated) to support large enterprises with more restrictive security settings. Leveraging Groups is not a good alternative for users who primarily intend to use Hubs for external collaboration.