@=475FG= Dawger By referring to F-4 I didn't mean any direct similarities in the control systems of those two aircraft, merely the F-4 module developers approach to add extra means facilitating desktop simulator limitations. In RL F-5E control stick deflections are not instantaneous by the mere fact that movement of a human arm isn't instantaneous (something CGI animation guys are struggling to wrap their heads around), let alone holding a piece of metal while acting on springs with additional force. I haven't seen any real world data but I'm also far from assuming infinite control surface hydraulic actuation rate and momentum capabilities.
All that said I don't think anyone is going to provide a ready algorithm for ED here in this topic. I for one am only highlighting the possibilites, based on examples from Assetto Corsa and DCS Black Shark. It's up to ED to acknowledge the need and come up with a solution, as was the case in numerous instances, G-force fatigue being one of many.
From all of the mildoc materials I read F-5E's only means of control input guard rails are literally constant rate springs and a weight bob for the pitch channel.