While I totally agree with you, if this succeeds my hope is that it will finally push browser vendors to come up with a good authentication/authorization story. Make it totally integrated in the browser, such that I remain in control and Mighty only sees the equivalent of OAuth token it can't use to login in my name. No more custom signup forms, no more botched login flows redirecting you through 13 sites, no more passwords stored on websites... That is an innovation I would gladly welcome both as a web user and a potential web developer.

Every service needs auth. I can't believe nothing is properly integrated. I still have to click and enter a password, which fortunately the browser can create for me. I still have to receive an email and click on a link to validate my account. Web developers still have to create forms, manage the whole process, hash, salt and sauce my password and not leak it.