The current in game jetways have been around since the launch, and like the airstairs haven’t been updated (unlike the buses, fuel trucks). When compared to a real jetway, they look out of scale with the aircraft, and they don’t have any animations other than extending and rotation (new animations could include second Jetway attaching to L aircraft, or some aircraft use the L2 door and the end section of a jetway extending to meet the aircraft).
I think this is good, although I am more of a performance player, looking for ways to make it more efficient to fly new routes, new planes, new airlines, new destinations. But I do agree that having Balance at the workable airports is important.