why would it be more fun if it was because the plane you've chosen to fly had an unreliable engine IRL?
Wiley.
It's a value question. If you want a more realistic experience, you might be willing to endure. If it's purely about the combat at nominal, you might not be so willing. It's kind of like no-icon flying that way.
I'd propose that it be a feature that could be enabled or disabled. For scenario play, it might be really interesting and would provide an offsetting feature that might enable, certainly in the case of the Eastern Front, a stabilizing effect. In the Pac theatre, it'd probably just make things a landslide.
I think your analogy with the server a bad one, though, and I'll provide a counterexample. Consider the instance of 6x50 cal on the Pony D. Assuming you take off and are flying, you now face odds that not all guns are operational at any given instance. That's not a binary fly/no fly, it's a diminution of your firepower for the duration of the mission.
Recall the name of the thread. Such a feature would certainly provide a more historically accurate experience. I make no claims that people would like it better.