I'm not sure I'd ever buy an automatic Lange. I have a fierce affinity for manual wind Langes since the pleasure to wind a Lange is so enjoyable, I wouldn't want to deprive myself of the pleasure by having an automatic.
That being said, and although I am not affected by the change, I still prefer the 3/4 rotor as I found it to be more unique and unique. Furthermore as a fan of micro-rotors in general, I'm obviously biased.
Last but not least, I love the blue-handed 1815 timepiece. Loved it since its debut and with Jocke's influence, I can only say that I'm loving it more and more.
Thanks for the summary Fx!