@Kathy, after reading I started to think, I do not think that would ever be possible. Why? because its part of the feature of having an activity page in the first place. When I follow someone like others their work fascinates me and I like to keep up with new artwork they upload. If you have a control then all you will have posted on your activity page would be there AVATAR that IMO would seem defeating the purpose of following the individual in the first place.
And by having the feature following when they have activity as favoring I have personally seen a piece of work of another member I would not even known existed. And I follow them and so forth. That never bothered be because its an activity page and that what activity pages represent activity, lol. Who knows, with the next big feature as far we know it may all be taken care of.
The activity we see is updated and its not as if we see everything at once. Personal it does enable me because I am an administrator of two groups I get a indication that member may have posted a particular image into my groups. And then of course I see everyone I follow and I must give them credit because they sure stay active commenting, every time this is done remember your photo does move up on the actual listing page.
Every image I have ever received a comment on, I have typed my response and not a copy paste message every response is typed manually.
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Cheers, Michael Hoard Actor, Artist, Photographer.