I respect your opinion and thank you for posting it up for discussion. However I have to disagree with some of what you have said.
For starters, I am intimately familiar with the vibration you are talking about, and if you find some of my posts from almost 2 years ago you'll see that I wasn't too happy about it when I first discovered it. I'm a conservative driver but not when I test drive, so I didn't discover this until I got the car home. I was angry because I believed there was a problem with the vehicle, but since then I have discovered exactly what you stated in your post: this vibration is completely normal, it was designed on purpose as a fuel saving feature. Everything in life is a trade-off, based on the laws of physics - I wanted a fuel efficient mid-size vehicle so Nissan gave it to me.
I strongly disagree with your statement that Nissan decieved us - in what way were we decieved? You said it in your post - Nissan designed the car this way on purpose, and they had good reason for it. They designed a vehicle with excellent fuel efficiency that delievers in the real world, and it has proven to have above average reliability and quality by most assessments such as TrueDelta (real world), Edmonds, and JD Power and the CVT now has a 10 year warranty to back it up.
Don't get me wrong, I still don't care for the vibration but I wasn't lied to or tricked into buying this car.
For comparison, I bought a 1989 Ford pickup truck, and it had the absolutely worst 5-spd manual transmission I've ever driven, and the engine was incredibly loud. The tranny took a magician to shift smoothly, and forget about downshifting into 1st unless you were at a dead stop! Many service shops assessed it and said "everygthings good, these Ford's just shift hard, but they last forever!". But I accepted these negatives because the positives outweighed the negatives, I still tell people how much I loved that truck despite it's shortcomings!! The car came with these shortcomings, it had a list of pros and cons, and even though the truck wasn't perfect and had it's negative aspects, I didn't believe Ford had decieved me. Of course they knew the tranny was rough, and that's ok, they didn't force me to buy their product and they didn't try to be deceptive.
Nissan designed the CVT and programmed it for efficiency, and the trade-off is a bit of vibrarion. As long as reliability is strong then I can live with that because I've owned many vehicles and they all have their shortcomings.
Another example: If you owned the Europan version of the Rogue, you might apply North American standards and say the 2.0 engine is underpowered and downright dangerous for highway passing. Using your logic, you could say Nissan knew the 2.0 was underpowered and dangerous and decieved us by not informing us of the shortcoming. You could call it a conspiracy to decieve the buyer, but the Qashqai is one of the highest selling vehicles in Europe and those owners would say the 2.0 has lots of power because they're used to smaller engines than we are.
Every vehicle has shortcomings, you won't find one that's perfect, definately not in the price range of the Rogue anyway. I don't like the vibration but I like everything else about the car so I think we're way ahead of the game. I feel for you though, buying a vehicle and then realizing it was the wrong decision really sucks. I hope it works out for you, perhaps after you drive it for a while you won't notice anymore like most Rogue owners.