I gave up my dining room. It was the only room in our old house that was long enough to fit a 12' frame in. I also considered a separate studio, but decided I didn't want to have to come back to the house for snacks and potty breaks!
we never used the dining room for eating, it was more of a "display" room than anything LOL!! But I did keep my crystal chandelier. It's not a big one, but I love the rainbows of color it throws when the morning light comes in the windows.
DH and I are still building the new "machine shed" but it's going to only house my vintage sewing machine collection. Getting all those machines out of the house is sure going to be nice though!