there are always teething problems with new model cars. we all accepted that risk when we decided to get one of these new V's. what's disappointing is the reflexive "user error" posture that GM is taking with regards to these issues, especially since we bailed them out as taxpayers and are now bailing them out again as customers. i am on my second ATS-V because of the rattling wastegate issue. the new car has it as well. and of course, GM says it's "normal", even though some owners don't have the issue. i would think that if it was normal, 100% of owners would be experiencing it. per that link, other ATS-V owners are having torque converter issues. others have noisy manual trans issues. others are having issues with the recaros.
it's not enough to beat BMW and Mercedes at the track, you have to match them with quality as well if you want to compete in the segment.
if i were you, i'd make as much noise as possible. let their regional sales rep know how you feel. post on all the forums. no matter how useless their customer service may be, continue to launch complaints with them.
in the past, this is the only thing that has worked. the V2 CTS-Vs and CTS-Vsports had issues as well, and GM played the "it's normal" game until enough people complained... then the problems were fixed. the bean counters at GM don't want to spend any money until they have to.