A while ago we removed the cushions on the back of our living room sofa. They were too poufy and our dog sat on top of them while looking out the window so he was basically ruining them anyway. I actually think the sofa looks better without the cushions but it makes sitting on the couch rather uncomfortable because the seat is too deep. I can't stand sitting on a really deep sofa with my legs sitting straight out in front of me like a 4 year old. So far my solution has been to pile a bunch of throw pillows behind me to make things more comfortable but it feels cluttered having so many pillows. I think one or two of these oversized lumbar pillows may be the answer.
Of course it will probably take me another 6 months to decide on a fabric to use.