I’m sure plenty of people know this already but I like my startup process and some airports don’t have parking forcing a runway start. Also, I often accidentally start at the runway if I forget to set parking. I find that disorienting and I have to spend a bit of time checking the airplane configuration anyway.
If you backup and then replace the runway.FLT file with apron.FLT contents you will be able to start in the same cold and dark configuration on the runway.
Being able to modify or load these configs on demand could be a nice addition to something like Addons Linker.
I’d not recommend doing this at a busy airport if you do multi-player.