Etheric light is too hard to come by for casual PvE players. I get the idea behind it is not have old gear become obsolete but for a large swathe of the player base it's impossible to come by. Why isn't it in the Speakers material exchange? Make it expensive, make it worth a ridiculous amount of motes/shards/energies etc or only let you buy one a week but put it in reach of people who don't want to grind ToO or high level PoE.