Would love to see some of the more common mods tied into the default LSPDFR. Primarily the stuff Albo has put out, Keep Calm and Better EMS. While some of the other current mods would be nice like more models/uniform options, picking your patrol loadout and getting a partner that matters the QOL improvements those few mods I mentioned would be amazing if they were already cooked into it. More callouts and a more varied amount of Callouts never hurts. If possible being able to setup a patrol area to get calls in. Getting a random callout 5 miles away to respond to just doesnt make much sense unless your working as a county or state entity and no local LEO is available to take that call. Possibly even scripting it so we do not have to call for back up. If your responding to an armed robbery in progress your generally dispatching more then 1 unit.
The problem is I do not personally know what is and is not capable of happening. I actually saw this on something completely random and bought GTAV for PC just to play this. So any development is not a bad thing. Would it be nice to eventually have a Multiplayer style server we could work together on responding to calls sure. Its not necessary for me to enjoy this amazing mod though. (Plus so far all my experience with FiveM has been absolute cancer.)