Talya, I wish no one to leave topic, please. All suspects eventually finish their suspect career.
I'll give you all two examples now:
1. 5 cops on the server, 1 suspect with fast car, let's say medium-high driving skill. They are all after him, most probably, long chase, leaving Liberty City without law forces for a while.
2. 5 cops on the server, 1 suspect with fast car, 2 cops are in new unit, using fast police cars.
These two new unit cops can chase down suspect, eventually backed up with 1 police cruiser. You get 2-3 cops to stay patrol in the city, making it a safe place.
You see the point now?