The Amur tiger exhibit is superb and easily one of the best around, but the Pallas's cat enclosure is fairly tiny and not that much different from many small cat exhibits at the nearby Cincinnati Zoo.
I would wait until Polar Frontier and maybe African Savannah (btw with lions, cheetahs, and possibly servals and caracals because I know you love cats!) to return to Columbus.
@Black Duiker - I agree with your assessment of the exhibit. It's a space where the designers were scratching their heads asking "what could possibly go in here?" And honestly I can't think of a small North Asian species that could fit into that space.