MW50 -Secondary effects were cooling of the engine .

[rga]

One should not forget that engine duration is as much important for pilots as performance. In real life, using emergency boost seriously shortened the engine life expectancy and is sometimes even fatal for the next sorties (e.g. engine seizes during the take off in the next flight). That's why real life pilots flew much more carefully than us now. I doubt that pilots will engage MW-50 in every encounters.
In game, there is no system for engine abuse punishment, so everyone will happily engage MW-50 as long as the engine can still endure. It's highly unrealistic. Some compormises would have to be made here. Either one leaves the MW-50 as it should be and relies on gamer's faithfulness of realism, or one porks MW-50. Both solutions are equally reasonable, none is perfect.