since 20.1 we got the APU to use. But isn‘t it more realistic to add the Ground Power when at the Gate. So you don‘t have to start the APU from the Cold and Dark State. When ready for pushback you can disconnect the GPU and start the APU. This feature isn‘t that hard to implement and it would increase the Realism of the SIM. I know that the Developers just rolled out the new update but for the future it would be nice if next to the Airplane a GPU would Power it up. For those who don‘t know what it is here is an IMAGE:
So if you think this would also Increase the Realism leave a Vote!