{F78678}

Add comment being higher than updated subscribers seems more correct though (but, yes, below everything else).

Maybe the rule should be something like this:

• If you add only yourself as a subscriber only, the CC transaction has low strength (say, 0.25).
• If you add anyone else or remove yourself, the CC transaction has normal strength (1.0).
• "Comment" currently has strength 0.5.

...since adding CCs other than yourself seems very slightly more interesting than "commented"?

The "updated" text is also lazy, it should eventually show the full action ("epriestley added alincoln as a subscriber.").

Yeah, that seems like the "best" rendering for consistency and user-expectation, once the text shows names it could probably go either way :) (though just "Added Comment" for the trivial case still seems marginally better for UX).

Yeah, that makes sense to me. That wouldn't apply to Maniphest for now anyway since it still has funky custom subscription management, but I'll probably add that rule when I clean up the strings, probably after switching Maniphest over.