Indeed. People at opposite ends of a long couch may indeed be seeing a different quality image than the person sitting dead-center. Certainly there is absolutely no way for a guest to sit on a chair off-angle and watch it - they would see a dreadful image, which is a crying shame really. Last year a few times I was thinking of having my girlfriend's sister over with us to watch some movies, but alas, there is just nowhere for her to sit and see it, without it looking like garbage, unless she laid across our laps. I dealt with that issue only because I did all my watching from dead-center, except for when I'm at my pc, which in those cases I just don't even bother trying to watch it because it's horrible.
It's a shame Samsung doesn't work more towards improving that instead of improving motion controls and apps.