Right now we do have a working medic script, but the cops lack any medic support, only the SWAT has access to a medic unit. My suggestion is to add another spawn in the police, a " police medic " which would be locked to PC members.
To balance the fact that he can heal, the police medic would not be equipped with a nightstick giving him no way of arresting criminals, much like the current swat medic.
Yes I know you can play medic and follow your squad around, but there are problems to that.
First, you cannot help your squad fight other criminals as a paramedic, only heal them, and even if you were to grab a weapon and use it on criminals, that would be considered a rulebreak and in addition you'd gain a couple wanted stars.
Secondly the jail doors won't open for paramedics. Moreover entering the jail as a medic will give them wanted stars, unless you're with trusted cops to bribe you. much like in the screen below
A police medic would help the cop side which is unbelieavably outnumbered nowadays. If you do have suggestions of your own regarding the police medic feel free to tell me what you think,