In addition to other member's suggestions, few more changes are needed
VABB gate numbers are completely wrong. The International terminal gates are numbered as V and start from V4- V30s and domestic gates are numbered A1 to A12.
International cargo bays are not simulated. ( These are opposite Gate V6 to V11)
Runway 14/32 is rarely used ( only when main runway is under maintenance)
This airport has tremendous potential to be a nice scenery
Not sure how to lower the traffic on one runway, it can only disable it.
Yes. The best way may be that you have two AFCADs. One with both runways in operation and one with only 09-27. Users can chose their options.
where is vabb updated