You forgot to mention cabin noise.
I can't believe you actually bought such a piece of crap.
I've said it before, and I'll say it again... Between the magazine articles and the presence of an oil temperature gauge, there's more paranoia about oil temperature than actual occurrences of limp mode.
There seems to be a lot of variation in the temperatures experienced by owners which makes me think that the accuracy of the OEM oil temperature gauge is suspect.
If the car didn't have an oil temperature gauge from the factory, we wouldn't be talking about this as much. As far as the track guys are concerned, they would just install one along with their oil cooler.
Just wait until the Miata doors are offered as standard equipment on the 2015 model!
I could just be talking out my butt here, but I'm pretty sure that some risk of major mechanical failure or a safety hazard has to threaten a large number of cars in order for there to be a recall. It took several fatal accidents and a huge public outcry to trigger a recall on Firestone tyre equipped Ford Explorers. Nobody is dying from limp mode and a few guys flogging their cars to the point that the computer implements a safety measure to protect the engine isn't going to trigger a recall. At the end of the Firestone/Ford Explorer tragedies, it was determined that user error (improper inflation) was partially responsible for the tyre failures that caused deaths. I'm pretty sure that pushing the car to limp mode would be considered the result of improper use of the car by the manufacturer and NHSTA despite what we as enthusiasts think is the "proper" way to use a 370Z.
As enthusiasts, the members of this forum represent a small number of the owners of the 370Zs sold, and amongst the membership, there's an even smaller number of people with oil temperature issues. I don't think it's a big enough issue amongst owners to warrant a recall.
On the other hand, I could see how throwing an oil cooler on the current year's car so that the magazine writers start publishing glowing reviews about the 370Z would be a worthwhile investment in salvaging low sales figures or even boosting interest in the car.