I came across several airports but one in particular, YBCS ( Cairns Australia) where the Jetways are located well behind the airport gates, and out of reach to any aircraft . Is there any way we can move those jetways to a better location? . It seems to me that 3rd party developers who model airports are doing this quiet successfully
Yes, they are doing it by hand when making a new scenery. We are supplying GSX with a set of replacement files that are made automatically, taking data from the default airport, so parking positions and jetways positions are identical to the default scenery, just with a different jetway model, which is dimensionally equivalent to the default one so, if you were using the default airport, you would have see exactly the same situation.
Changing jetways in the replacement files would require recompiling them from their source, but while in FSX/P3D there was a quick way to do it, since the SDK had a small command-line utility (BGLCOMP) that made easy to change/recompile a source XML into a BGL, in MSFS the build process is made only if the source file of an airport is part of a properly setup project, which is not that easy to setup automatically.
However, once GSX is installed, all its jetways become available for usage in custom sceneries, considering MSFS has a fully featured Dev Mode editor, it would be useless trying to duplicate all the rich editing features of the standard Dev Mode, and once freeware authors will start to realize they can use all the additional objects that comes with GSX which are usually hard to do, like Jetways and VGDS, I'm sure we'll see lots of freeware add-ons for GSX users, like we are seeing now with GSX profiles, which is just the first level of customization possible.