I have always had a wish to be able to adjust this attitude in helos. Sadly there are models that should, for instance, hover with a positive pitch as the real ones do but instead they must be level to hover in FS. It's too bad this aspect was maybe overlooked because it would add that final touch to some remarkable efforts. All I know is that it can't be done in the aircraft cfg. But sometimes you can game the game a little by changing the first value in the Main rotor, position, if it's there, in the cfg and give some relief to excessive +/- pitch in flight.