Just received and completed the survey. Thought overall it was pretty unremarkable, but maybe it will help Mazda at least a little.
The whole "Spend $3000 on possible options" bit was more interesting, but I think they would have been better off with a list of features and a scale ranking their importance to you and how likely you would be to consider purchasing them. As it was, I ended up "buying" virtually all the safety features and had to ditch a few convenience features that I would have seriously considered if I had more "money". So, now Mazda thinks I don't care about rear AC controls or ventilated seats.
Also, I wish the survey had addressed how options are bundled. When I purchased my Mazda 3, I had to forgo the tech packages because they either were not available to me on my model (the GT tech package) or contained mostly stuff I didn't want (Navigation, auto AC, Apps, Upgraded stereo) and was not willing to buy just to get the one thing I wanted. (backup camera) There wasn't a good way for me to convey my displeasure with how the bundles were done.
Other than that, I was fine with filling out the survey. Hopefully, it will help improve a really great car even more.