i dont understand this it has got worse since GSX2 at most airports I now fly into this happens with the baggage carts and the buses.
The only change in GSX Level 2 is the bus now stops in a position halfway between all the doors so, as usual, it can be affected by the airplane configuration (how many doors, and where), but also by the scenery AFCAD, depending where is the last possible node which will be chosen before abandoning the AFCAD path and starting to go to the airplane.
The baggage carts have randomly selected startup times, so their chance to hit some other vehicle cannot be "better" or "worse" than the previous GSX, it's just random.