I want to suggest a mod that would make the AI in traffic stops a little bit unpredictable. Basically like in Traffic Policer's ANPR callouts, there's a chance the suspect may come at you with some kind of weapon because IRL, from what I know, officers are trained to handle anything they're faced in traffic stops which includes combative subjects or something like that.
The reason behind this suggestion is that LSPDFR's traffic stops are way too predictable, the subject would either cooperate or would make off. I hope that there are situations where you, as the player, would feel more on edge in traffic stops and in ped stops as well. In LCPDFR, I believe, it has this feature and it would be nice to be implemented in LSPDFR as well.
Hopefully this suggestion can be a game changer.