All cops only lose rights to their main combat weapon. So this means they can still use their abilities. The reason why its like that at the moment is because, lets say a cop and robber are having a deadly fight and the cop misclicks and shoots a civilian. If the suspension resulted in loss of all the cops abilities then it would be over for the cop. Since they can still use their abilities the cop can run and use a defencive ability.
But on the other side I have seen and have personally experiance cops abusing their power. I recently made it so cops cannot use turrets and pets to attack the city. This is seems like the last step to solve this problem completely.
Possible solutions:
Kill the cop with a special unit or group like have the F.B.I. go assanate that bad cop and give the cop a long recovery time for their hospital timer.
Transfer the rogue cop to the robber team, or even put the cop on a hostile team and have the cop targeted by all units on the map.
Kill the cop immediately after lets say 3 kills in 5 minutes.
Ban the player (not recommended) And I wouldn't agree to this lol
Make all abilities of the cop disabled, only allowing for the moment ability
Put the cop in jail
Kick the cop from game
Make all npc cops hostile to the cop player for a minute.
And the list of possible solutions will just keep going on. Let me know what you think and what the best Idea will be.