The yellow stop line in FSX is adjustable. There are 4 additional T settings for various size user planes that brings the T out from under the plane and can be ajusted to the front nose gear. This is a SDK feature when using ADE
It surely is but, in the context of using GSX, it wouldn't make any difference if we read that info, since default sceneries most of the times don't have them set, and 3rd party airports usually draw their own lines instead of using the AFCAD.
We have an internal method to place airplanes with their front gear on a specific place (with an arbitrary number of airplane types) that works regardless of the AFCAD, so it will be a single solution that would work both if the lines are made with an AFCAD, but also if they are entirely custom without putting any information about the parking tee, which is the case of basically every 3rd party scenery out there.
When GSX will add complete scenery customization, that will allow to individually set all vehicles starting positions, the exact marshaller (or an eventual docking system) position, users will be able to customize the exact stopping position, regardless of what info is coming from the AFCAD, even if the parking has been wrongly set, misaligned, etc.