I bought a TV that's $500 cheaper 3 months after i bought it, maybe i should go complain to best buy too and see if they'll give me a refund. Such pricing changes is the reality of not only buying consumer goods, but just life in general. I sympathize with the OP, it stings and burns, but what about all the model S owners out there who shelled out a lot more $$$ and got a lot less than what we did.
What is tesla supposed to do? not introduce price changes or new features at all to avoid angering legacy owners? For every 1 person sore about the price drop, there are 10 more people excited about being able to afford a car they want now. I'm happy about the price drop simply because it gave me the opportunity to upgrade for only $2k instead of $7k from a 60 to 75.
While i know if i had ordered a 75 now i would've saved a couple grand but i choose to look on the bright side knowing i got my model S 3 months earlier at the very least.