So with Mr Musk stating that the Y will use many of the same components of the 3, this could bring the Model Y delivery date back to 2019...and with the 3 adding orders faster than Tesla can make at full 2018 production speed (kinda a great problem to have)...could/would/should Tesla offer current reservation holders of the Model 3 a choice of moving the deposit from a 3 to a Y and being first in line...and would people do this sight/price unseen?
Not sure if this would help Tesla...the 3 will sell every one they can make for the next couple of years
And the Y should do as well or better...
Moving some orders from the 3 to the Y could relieve some of the production pressure, while making sure there are plenty of Y orders to fill in 2019...but truthfully it looks like there will be massive orders for both. So moving orders might not offer much relief...except for maybe allowing the supply chain some time to massively ramp up components needed for both cars.
So while the effort (moving customers from 3 to Y) wouldn't be much or hard, it still might still be more work than any reward.
But if Tesla did say, "hey loyal customer, if you move your Q1 2018 Model 3 order to a Model Y, we will put you at the head of the line for a Q2 2019 delivery date," would people be interested?
(Probably a silly idea...but how would the stock market react to Tesla claiming, "Hey, we haven't even fully shown the Y year and have 150,000 orders"?...I don't know why I always have Tesla starting every sentence with"hey".)