I know there are other things for FSDT to focus on right now. But a suggestion for a future update would be a PCA hose connected to the plane. The GSX jetways have a rolled up PCA hose modelled already, would be very immersive to see it connected to the plane, the Fenix for example can use PCA. Also, many airports having PCA also provide external power via a power line, it's not always a GPU generating electricity. I think the second item is much easier to implement (a power cable going underground or to the jetway).