Additional notes/the suggestions:

Firstly, TTT has always been a fun game mode especially on Zarp, but when you look at other servers they tend to have more content (sometimes).

Traitor:
1.Starting with the Traitor side of the C menu, my first suggestion i have is a Head Crap Launcher. The head crap launcher is a popular piece of content within the TTT community and it is very fun. When a traitor purchases this weapon and shoots it to anywhere on the map a small rocket comes down from the sky creating a little damage effect to any one standing close to it. Anyways, once the rocket has hit the ground half-life head craps spawn around the rocket and attacks any one that is close. Right now i cannot find an example video of an head crap launcher but here is an image. The stats of the head craps and the explosion from the rocket can be what ever fits the style of the current Zarp TTT.

2.Moving on to my second traitor suggestion: Freeze Gun. The freeze gun is commonly used for both detectives and traitors. Once a user shoots an other user using the freeze gun, that user will be frozen for 5 seconds/more or less and cannot move, but they can speak.This would give traitors more opportunity to get easier kills (especially for new users). For example, a traitor freezes a user and then harpoons them, but using this in plain sight would be difficult as it would be easy to spot using the gun and harpoon. This makes it a little more balanced. The gun usually has about 2/3 bullets and it is also very fun to use for both detectives and traitors and the skin of of the gun can be different to any other gun, so it would be easier for players to spot if a traitor is holding an illegal weapon.This is a little gif of the freeze gun.

Detective:
1.Now moving on to my detective side of the suggestions. Starting with the freeze gun. As i said above the freeze gun is a traitor and detective weapon. It would be a great item to add to a detectives arsenal, as it would help kill traitors and it has a better chance to kill the old and experienced players if you are a new user. Freezing a traitor gives a easier chance of killing them, but the freeze gun is a very easier gun to notice and the traitor can just jump out of the way of the bullet sometimes. To make it balanced and equal.

2.Secondly, i will suggest handcuffs. Once a detective handcuffs a user, that user will be not able to use their weapons for 10/20 seconds. This user will still be able to run around but they will be unable to defend themselves. Also, the user will drop their weapons once handcuffed and will not be able to pick any guns up until they are uncuffed. The detective can also uncuff a user if they wish too. The hand cuffs are only able to cuff 3 people in a live time but only one person at a time can be cuffed until the timer runs out or the detective uncuffs them. The hand cuffs can also not be able to be picked up by innocents or traitors which doesn't make it OP. Examples of the hand cuffs. Here and Here

Potential Issues/Exploits:
For the hand cuffs a new KOSable offence will have to be put in place. When a user is hand cuffed and a traitor gun is dropped, that user will be able to be KOS'ed unless the user has announced in chat that they have a traitor weapon.
Thank you for reading my suggestions (if you did) and i hope Dr. House, the CM's and CD will take theses into count as this could be a good idea for TTT in Zarp and hopefully help to bring the server back to #1. I just wanted to get some of theses ideas out there so i don't mind what happens in the outcome nor the result of it.