I hope I'm not the only one who thought, "Hey, that'd be some serious immersion, I'd like to do that".
Honestly I would like do something like this, however, I only want to do it every blue moon. This type of realism would be great (IMO) for scenarios, I could easily see myself warming up the B25 while going over final details with my squadron, taxiing out the runway, going through the motions, etc. It would be awesome, but only for that. In the MA I want to take off immediately and get into the battle, not sit around fiddling with fuel mixtures, cowl flaps, and battery settings.