I can not see where CDV is even going to notice the loss if you don't buy the game. IMO it would be better to import it, and contact CDV to explain why you would not buy it from them. Telling them you are not going to buy it at all might help, but may not get taken seriously (as you noted, talk is cheap, though an actual letter should get much more respect than an email).
I know someone who always leaves a tip in restaurants. If they get bad service and do not leave a tip, then the server doesn't necessarily know that they lost out because of anything they did or didn't do, since some people just don't tip. Instead, they will leave a nickel, so the server knows the value placed on their service (and it is less confrontational than demanding to see the manager, or something).
In any case, you could try contacting CDV and ask if they plan on changing whatever behaviour or policies are in question before December, because you will not buy a game they publish as they currently act or conduct business, but had been looking forward to one that is to be released then.
