I've found some new items that might help to increase the amount of items that the detective has available, and you might find some of these interesting to add to Traitor as well.
M4 SLAM
The M4 SLAM is a replacement for the SLAM Tripmine currently on the server. As it is currently, the SLAM is triggered by traitors, and they have no warning of where they are, unlike how, say, C4 tells other traitors their location. This addon fixes that, and expands the functionality of the tripmine significantly; the tripmine functions more like the SLAM that can be used in Sandbox mode. This means that you can now optionally drop it on the ground instead of attaching it to the wall, and then blow it up manually. Detectives can defuse the tripmine in either mode (floor or wall) using a defuser, and can pick it up themselves afterwards. The traitor that placed the tripmine also can pick it up at any time.
Juggernaut Suit
The Juggernaut Suit is a passive. Using this suit, the detective becomes resistant to most forms of damage. In particular, the detective takes 80% less explosive damage, 65% less fire damage, and has their movement speed reduced by 25% (configurable to any value). Additionally, they can only take up to 50 explosion damage at once, which means that they can't be instant killed by any single explosion; that means that Banana Bombs in particular might make a good choice to take detectives out, since they'll survive a Holy Hand Grenade or Jihad, even if it's right on top of them. The addon page mentions that it uses a custom model for the detective when this item is activated, but I'm not sure if it includes the model in the download or not. The model is no longer downloadable on the Workshop, so worst case scenario, we have to pick a new model to use instead.
Lucky Horseshoe
A passive that's for both Detectives and Traitors (although this is configurable), it reduces fall damage by 90%. Additionally, any fall damage taken cannot exceed 35 damage.
Hermes Boots
The Hermes Boots are a passive item that increases movement speed by 30% (configurable to any value). It's available to both traitors and detectives, although I personally think it should be removed from traitors because of how obvious it would be. This item can be considered an offset to the Juggernaut Suit, since it increases movement speed enough that you're slightly faster than you were before, offsetting the Jugernaut Suit's speed reduction.
M4 SLAM
The M4 SLAM is a replacement for the SLAM Tripmine currently on the server. As it is currently, the SLAM is triggered by traitors, and they have no warning of where they are, unlike how, say, C4 tells other traitors their location. This addon fixes that, and expands the functionality of the tripmine significantly; the tripmine functions more like the SLAM that can be used in Sandbox mode. This means that you can now optionally drop it on the ground instead of attaching it to the wall, and then blow it up manually. Detectives can defuse the tripmine in either mode (floor or wall) using a defuser, and can pick it up themselves afterwards. The traitor that placed the tripmine also can pick it up at any time.
Juggernaut Suit
The Juggernaut Suit is a passive. Using this suit, the detective becomes resistant to most forms of damage. In particular, the detective takes 80% less explosive damage, 65% less fire damage, and has their movement speed reduced by 25% (configurable to any value). Additionally, they can only take up to 50 explosion damage at once, which means that they can't be instant killed by any single explosion; that means that Banana Bombs in particular might make a good choice to take detectives out, since they'll survive a Holy Hand Grenade or Jihad, even if it's right on top of them. The addon page mentions that it uses a custom model for the detective when this item is activated, but I'm not sure if it includes the model in the download or not. The model is no longer downloadable on the Workshop, so worst case scenario, we have to pick a new model to use instead.
Lucky Horseshoe
A passive that's for both Detectives and Traitors (although this is configurable), it reduces fall damage by 90%. Additionally, any fall damage taken cannot exceed 35 damage.
Hermes Boots
The Hermes Boots are a passive item that increases movement speed by 30% (configurable to any value). It's available to both traitors and detectives, although I personally think it should be removed from traitors because of how obvious it would be. This item can be considered an offset to the Juggernaut Suit, since it increases movement speed enough that you're slightly faster than you were before, offsetting the Jugernaut Suit's speed reduction.
