My work on a visual indicator isn't going well. It turns out I stumbled upon a Mozilla/Firefox bug which prevents visual indication from working.
Sorry to hear it... I hope you haven't wasted a lot of time on it. I know that can be very frustrating.
I can fix drag-and-drop so it doesn't deposit the dropped item to the bottom of the group, but visual indication is out for now. Please move that FR (just the visual indication bit) under the "Supremely Difficult" section. A future version of Firefox will have this fixed, then it won't be supremely difficult.
Ok, I looked everywhere, and I don't see this anywhere in a FR...
The only place I see it is where I had asked for it, but it was only incidental in a discussion thread, not as a proper FR.
There are two requests for 'Visual Indicators', but they both have to do with Master Password Verification, not for visual feedback (black line) on drag-n-dropping Accounts.
Am I misunderstanding? The text you quoted had to do with the visual indocator I asked for for dragging-n-dropping the Accounts.
That said, I'll go make a proper FR for that right now, and place it into the Supremely Difficult category, so that others will see it. It isn't the end of the world, as long as you can get them to drop approximately where the mouse is, instead of going to the bottom of the list.