TheMeadowMan

Asides from the obvious modifications, like Stop the Ped or Compulite, here are some of my favorites;
Backweapon; Simply just puts a weapon like a rifle on your back or wherever at whatever angle. Enjoy this instead of having the annoyance of holding my AR after a shooting, and pretty effortlessly done once you have your configurations as you want it. Depending on if you are a female or male, you need to set it differently, so its completely customizable in terms of where you actually place your weapon. Immersive in terms of the fact I love to do drug raids and SWAT type of things, and I need something for a female ped that works. Think of it like a FiveM sling script. If you wanted a crouch ability with this, use the crouch plugin. Riskier Traffic Stops; Makes my patrols such more immersive. Traffic stops are typically mundane and I really dislike that, so having something occasionally such as a suspect ramming your car or getting out and yelling at you on a traffic stop makes them much more enjoyable compared to the basic stop, conversate, charge, let go scenario. (Though those are not the only scenarios!) Enhanced Weapon Control; In San Andreas, I spend a lot of time as an officer using my AR, and GTA itself doesn't have the ability to change the firing rate, so it is either change the weapon, or teach yourself trigger discipline. While trigger discipline was fine for me, this plugin makes it much better in terms of fire fights, as I never once have seen an officers AR go full auto into a subject vehicle. Especially if you have something like deadly weapons installed, there is simply no need to go full auto on someone. Callout Interface; Has been a must have for me with the latest callouts, just so much more detail! Especially since I love taking in the lore aspect of the game and doing the calm and collected side of calls, like sting operations, sometimes this is just fun an immersive to have. Like multiple plugins in one! If you have ALPR Lite for example, you likely do not need it with this. Here are some other things I just suggest you download, though its more on a personal preference and case by case bases;
Plugins; Tourniquet, Seatbelt, Automatic Traffic Control, Custom Pullover (helps with being AI), Stickywheels. Scripts; SimpleHUD, Hollywood Rollovers (love this on pursuits), Stop Reversing while braking, and Ambient FX. This is all based on what I have installed, so someone else might suggest something else that corelates or is better.