I think what it's saying is that when selecting the teleport destination it will show you a visual of the Aetheryte's vicinity. The same goes for the Aethernet (small crystals). I think what the JP were asking for was a means to click on a crystal from your map and teleport directly to it, which doesn't really sound that hard to program compared to some of the other features. It's akin to highlighting regions in the FFXI Region Info maps - the icons are interactive.