I hope I'm not banned for saying this
As much as I like the board and batten look, and the beadboard look, but it's being used so much lately that I'm beginning to get tired of it. Both looks are timeless, in a way, but both will become dated just like everything else. I want to do something to my walls, but I don't want to do anything that requires a lot of effort to take down in a few years.
I remember at the time we bought this house, there were a few older houses with beadboard, and I thought they looked old-fashioned, and not at all what I would want. That is making me hesitant to put any more in this house, even though I had considered doing the ceiling of the new dining room.
Can you think of anything that isn't currently on the bandwagon that is still well-liked?