I’d love to be able to provide a completely public link to a project or task. This would allow integration on existing websites with no export or middleware. There could be a few options to configure what elements of the page get shown, but it would essentially be read-only (perhaps with the ability to comment if desired), so this is a completely feature than guest access. In other words, there’s no login required.
My primary use case would be public progress reporting. This also seems like a good way for Asana to increase exposure; a tasteful “Powered by Asana” link and the asana.com address would serve as free ads for the platform.