What I would like for fail safe is for the throttle to go to zero but I would like the other servos to remain where they were before you lost signal.
I think this would be best because if you have a momentary lost in signal the servos will be where they were and hence once you get signal back you could continue from where you were. But I would like throttle to go to zero because if you don’t regain signal quickly you don’t want the model to fly off and hit someone.