If we want realism, a single shooting scene would have units backed up for numerous hours. Collecting every single scrap of evidence possible.
In the climate of the server, we have people expecting LEO role players to roleplay everything through on through while being expected to handle every-single situation.
Not every LEO wants constant action, having to be forced to jump from call to call. They have their own characters to play.
The only possible way without damaging roleplay quality is to have more people in the faction. And you can't force people to join.