From a passenger point of view certain parts of T1 are disgusting! Take for example arriving to the terminal through that hideous 1970's multi-storey car park....knock it down or at least have the decency to clad the bugger! Whoever planned it wants shooting - ugly filthy and nasty to use.
As for check-in, functional....at least those bloody chandeliers have gone in the main concourse! The departure lounge is ok, but what really lets it down is the cleanliness - have those roof drape things gone yet- last time I saw them they were filthy....really sets off the place...not.
Arrivals...again, functional if not tired. T2 is ok but not exactly in the same league as Munich, Copenhagen and the like. T3 is about the best, less shell suits