Small, possibly minor addition but one I feel could be quite handy. Currently, as far as i know linking achievements to others only displays that achievements text/requirements, it does not show the current progress of that individual sharing. For example, the conqueror achievements in dungeons/raids, when linked it only displays the required parameters/text, it doesn't show the players current progression of it (which ones he/she has completed and those yet to be completed). I would assume this would be a simply, minor implementation; yes, it's not the most needed thing in game now but I feel it's something worth adding.