it's a catalyst. do we "need" it? no, would it ramp up the price? almost certainly.
there is a lot of fear we are going to leg down and test 3200-3700 out there right now. it seems unwarranted since 2018 is not 2014 or anywhere close to it fundamentally
an etf approval would likely stop that thought process dead in its tracks. personally i think the question on an etf is "when" not "if"