Comment 5 for bug 527446

Confirm.
First, this is some kind of regression, since (as it has been said before) the 1.x branch has this feature;
second, this is would be very good from the user experience point.
However, this should keep as wishlist request, and if this feature will be implemented, then probably "Broadcast Messaging Preferences" window should has separate "check"-option in "Notification" frame (on "Options" tab), with name something like "Show avatar images".