Simply one of those things I didnt pick up (or chose to ignore lol) when test driving. Like with anything in life, you do make assumptions when you are presented with a new product. I could comfortably assume that a Landcruiser can go offroad and a Hilux can carry a load - but I wouldnt necessarily test it on a test drive. I made the same assumption that when buying a Camry that it would be a fairly comfortable car, so on the test drive was more looking at the room, visability, power/acceleration, features and getting my head around driving a hybrid.
I also did extensive research reading reviews and no where did the overly firm suspension really get any attention - so simply it was not something I noticed until I lived with the car for a while and noticed the harshness on the roads I travel.
I dont regret my choice at all, as the Camry Hybrid is a brilliant car - I am getting stupidly good economy in a car that is roomier and faster than most other cars on the road. I just figure that Toyota should get real world feedback on the vehicle, if I was them I would love hearing from owners in ways the car can be improved. I am also hoping that any tuning changes could be applied to other cars retrospectively.