FSX simply doesn't allow a configuration like KLAX, were you have terminal names as numbers and sequences of parkings on the same terminal that could be a single number, or a number with an A or B appended to it.
We solved the issue of making it easier to identify a gate with GSX, because its menu can use an entirely different naming and grouping method than what the AFCAD allows, and this is fully used in KLAX.
