There's one thing that's not explicitely mentioned in this proposal, so I just want to ask:

I assume (but didn't read anywhere) that whenever you manually add a photo to a contact (either on the N900 itself or by syncing a contact that as a photo assigned), this photo will override any automatically fetched avatars, no matter if they are taken from social networks as proposed here or (as usual) from the instant messaging application.

Is this what you are discussing here or would you prefer to see the automatically fetched avatar overwrite a manually set image?