Zurich seemed a little sterile, I guess it is Swiss thing and I wouldn't understand. LGW reminds me a lot of the old PIT terminal.
MCO is fine, but was better in the olden (pre RAT) days when it was NationalAirlines and bagage claim was outside in the shed on the east end of the terminal. Then again, in those days Shawnee Airways flew DC-3s.
My vote for worst is Novosibirsk. Open cattle car from the A/C to the ramp near the terminal building. Baggage claim is in the old shed past the (un)smiling guys with the AKs that check your claim ticket. Suppose it might be bearable in July, in December it isn't. JFK international arrivals (imigration and all) looked pretty d*** good on the way home.