Firstly the problem there is the cleanliness and the canteens over there should provide better quality of foods with better taste.
secondly the space is too less and the need to increase a little more which will give more space for passenger to stand in queue without pushing each other. the space of waiting hall should be increased.
thirdly there should be more counters during check in which will waste little amount of time of passenger.
fourth the washroom and drinking water area should be clean and hygienic.