The page-action menu shows all kind of page related Stuff and there is also the Readermode and the container-title/-icon (if enabled). All those things let you know that they are related to the(this) page, which is in accordance to the Photon-Spec where this Stuff where placed in the awesomebar, but the subscribe button is missing. Options to add the subscribe button: - like Readermode / like in older Versions (hidden when no Feed is available) - as page action menu entry (greyed out when no Feed is available) Possible problems: - Danger of confusion: An Addon/Webextension adds/creates a similar button -> Solution: Preference where the User can disable the standard button PS: Redesign of the Feed-viewer is in work: BUG 1365755 This bug should make the following absolete: Bug 717655, Bug 647948

I like the idea but it's a duplicate of bug 1375687 which was WONTFIX'd a few days ago.

That's really too bad, and damn why I did not found that one :(