But it’s very uncomfortable to transfer project to another organization without redirects: I have many email with broken links now.
How it works in GitHub, for example: you can transfer (or rename) repository and GitHub will make redirects from old names until somebody will create something with the same names.
But about redirects, I’m not sure if we should when transferring to another org. We do maintain redirects iirc if you just rename. But across orgs, I feel like potentially people wouldn’t want to share that information. Usually the org being transferred to or from does not share the same members. And they might not be happy knowing that members of the old org, know where the project was transferred to, etc.