A.
As the title suggests, when near an aether crystal (big or small) you can click the map to teleport to location via the aethernet system.

Within a short distance from the crystal to activate the map feature of course, but like two or three arms length of the larger characters.. not lala .

It's not super important but I'm more visually inclined to know where I'm going vs having to remember the name. "which ruby was that ruby? woops". So I'd call it a nice QoL.

B.
I might be missing a hotkey already in the game but if not, it would also be really nice if I could double right click the map (or some other sequence) to zoom out a level (and double left to zoom in). So say you're looking at a specific area you can quickly zoom out by key press, to see the zones interconnections and aethers.