While the knowledge to do what needs to be done takes some learning....doing it is pretty simple. Cowl flaps you can wait to do, and may not need to be adjusted. Adjust spark advance? I've never heard of anything WWII or later where you adjusted the spark advance. Supercharger probably won't need to be adjusted unless you've made a big altitude change, Prop speed takes care of itself, prop lever goes forward with the throttle. And FYI, you can push the throttle up without doing anything and it won't just instantly blow up.
My reference was encompassing all possible scenarios concering any plane that might see service in the game.
This includes spark advance controllable WWI planes, planes with manual prop speed control, or a plane that has any changable settings engine management.
Not all engines had automatic compensation of boost so it was up to the pilot to carefully watch manifold pressure levels and rpms and, in the case of the p38, actuate the intercooler flaps depending on conditions.
I was making a point on the complexities concerning making engine management parameters adjustable in game as they often were in real world usage..... though many aero engines of WWII usage featured pilot adjustable spark advance settings all the way up to the 4360 engines.
Manufacturers shipped planes with throttle stops and these were often field adjusted based on fuel quality and pilot demands on being able to get the most out of thier ride and taking on more responsibility concerning engine management.
Many pilots decided that thier lives being on the line was reason enough to have the option of getting the most out of thier respective rides.