/alcotest. How will this not be forced?
/Refuse and /accept
Vodka has the highest effect (idk what since idk the police limit in game)
Dispatch for police when someone is suspected either by FBI or police officers. Not by car kills or weapon kills. Those will be have to be called by people then dispatched :P
Use for drugs... when the color ends, just get healed... Makes sense why would any one even buy drugs except for respect...
Pets... can attack people when u teach them lvl 5... it will cost like 15K to get them there but it will not get abused since u can use it every 10 minutes + food randomly between 90 and 150 minutes, you can also leave him in your house, or take him out of the house. I already had this idea for a IV:MP server i was doing, it was great, working fine, but host was terrible, so in 2 days later it was pulled out of official release. Easy to script. + U can name him. He will die at the age of i cant remmember. You can also gift him, only buyable at pet shops.
Personal car inventory, 2 guns, like a ton of weed and clothes. Can be /searched by the police, easy to script done this before, same thing like the pet. /refuse or accept search
Backpack and many more things like that :P costs a bit but carries 1 gun, can be searched, /refuse or /accept search
Computer at home, /usecomputer, to call someone on their phone via skype or on their computer. Not sure is it needed but makes the server look cool :P
Food seller... cuz why not, food gives health and pizza boy will make some cheap moneh. U of course have to buy the food (and drinks) at a store for ur back pack :P
Alright next idea, Ive started scripting this one before my server got shut down but here: When you are in jail, you can /escape. 1 to 50 numbers, if the random number is 25 or 30, u escape but get wanted, next time u get caught u get tied with hangcuffs to ur bed, if u fail u get tied and +2 mins of jail time.
/rape, 1 to 30, if number is from 15 to 22 u get raped and lose a bit of health, he gets suspected and everyone is fine.
/kidnapp, works if the man is in your car, he gets tied. He can escape 1 to 15 number, if 7-11 and he has scissors, he escapes and gets thrown out of the car

Suspect can keep u in his car. Not sure is it possible for him to hide u from the map until u escape or get untied by da police.
Refusing any search or test will result in the cop /su u for Failing to comply
Also for the pets, he can defend you against /rape or another pet attack if he has better stats :P and possibly kill the other pet. Million of pets available :P
I got tons of more but no time, just got suspected by the FBI for buying weed, contact me if u got any questioins, peace, omg cops almost near me xD