I've seen people discussing issues pushing back the Asobo ATR with engine #2 in hotel mode, and it reminded me that I've wanted to ask for it to be a toggleable option for GSX to let you request services with the engines still on.
The main use case for me would be an aircraft that has GSX integrated like the Maddog -- let's say you had an APU failure and you pull into the gate, you'd want to be able to request the GPU be brought and connected before shutting down the engines, as you would be sitting with no power for a decent amount of time otherwise.
