I realize that GSX is optimized for use with commercial aircraft at gates, but the parking and Follow Me system really struggles if you are parking anywhere else. In FSX, if you want to go to GA parking, GND directs you to "parking," so it can be difficult to pick out the right parking space in the GSX menu, especially if the airport has more then one GA ramp. That means that the marshaller could be across the field from where GND directed you. Also, Follow Me does not seem aware of other traffic, so if it deviates from GND's cleared route, it can lead you into other aircraft on the ramp.
Maybe there's some way for the Follow Me to pull from whatever data the progressive taxi line is using to direct you to the correct space if you don't already know the parking space number?