Passenger flow is a major problem, especially when it comes to boarding. Gate 4, 5, 7 and 8 seem to be the only really useable ones, and even then 4 and 5 have a poor excuse for fences/chains to keep PAX separate, and 7 and 8 can't be used if there is an inbound flight! 7a requires PAX to walk across the inbound corridor then past gate 7, 2 can only be used to board onto a bus across the airside road, 3 is only useful for stand 8 - which has an airbridge, and 5a means PAX have to go upstairs then downstairs before being out on the ramp - not pleasant for the elderly/prams. Domestic arrivals is not too bad - close to the domestic stands.
Extend the terminal down to say stand 15/16, reducing congestion boarding onto stands 8-16, have stands 15/16-18 as walking ones and use buses for 19-24. It wouldn't have to be particularly wide extension, enough for more seating and the all important shops. Then you could have a walkway on the ground floor to international arrivals, which could be repositioned closer to int. stands so PAX would enter baggage reclaim from the opposite side to current. phew!