I don't see SS dropping this line. Yes, the ES were too high and they shouldn't have released 4 major characters in the first wave. Even with the ES high, the Kenobi is sold out and fetching ridiculous prices on evil bay while I'm sure Fett is on his way to the same outcome. Vader will be a bit, if ever, simply because they went huge with his ES. Even the Gammie sold out. With a very small ES, but a non-essential character.
Bottom line is this intro to the "Mythos" has done rather well and I see SS pleasantly surprising us - hopefully sooner than later.