Pyro, how about adding an additional feature to lower throttle settings to be used advantageously?
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My apologies for bringing up IL2/FB, but with that game the fuel is not much of a factor as it always uses historical fuel loads.
However, I find myself flying on lower throttle settings to keep my engine cool and prepare it for a fight, rather than do it to save fuel.
Now, I know that AH/AH2 does not use the complicated overheat scheme as seen in IL2/FB. AH fighters don't have a 'breaking point' in engine, as the WEP automatically switches off at the "red zone". But it does take time cool off.
How about, the engine heat cools off faster when throttle settings are lower? IMO that'd provide a tactical advantage(in terms of WEP performance), as well as an economical fuel solution, for people who choose to cool their engines by certain intervals.
In short, lowering the throttle will serve dual purposes, and I think people will feel less penalized if having low throttle settings actually gives a tactical advantage than just fuel economy.
It doesn't necessarily have to be historical or complicated - it could be a little game device as a "generic calculation" - such as something like, "all fighters will cool down 2 times faster when flying around in cruise settings".. and "all fighters will cool down 1.5 times faster when flying in normal power settings".
Now, this won't provide a direct tactical advantage, since AH, unlike IL2/FB, does not allow the engine to detonate itself. However, keeping throttles low will serve a purpose in cooling down the engine faster - and after a fight with a lot of WEP use, flying around a bit with lower throttle settings will pay off dividends.
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IMO it's a good way to promote fuel management via throttle (while it's not directly associated fuel burn rates, it'll have a positive effect in the way people think about it..)