Trapper should be looked at. With some Brainstorming.

I get that we want to get Trapper out of the ditch where he's largely accepted as being the worst killer in the game. The problem is that his traps benefit far too much from visual glitches with terrain. You can very easily hide these traps in locations where they aren't just hidden, they are below the terrain and impossible to see. Its one thing if a trap got you to lose an injured state but in every situation OTHER than getting caught in a trap across the map, a simple trap leads to a straight up down. No input from the killer. No need to learn mechanics. No need to learn flicks or throwable arcs or anything. Just a quick YouTube video where you learn where all the broken locations are and you're good to go. No other killer has this sort of relationship with their traps. Hag at best gets a health state out of her traps. SM at best gets a health state out of her traps. Freddy gets…well…Freddy gets nothing from his traps.

• Traps should at most injure survivors.
• If an injured survivor is trapped. It should just lock them up and not down them.
• TRAPS SHOULD NEVER BE ABLE TO BE HIDDEN UNDERNEATH TERRAIN. I can't believe this is still an issue.
• Trapper should have some mechanic to allow him to compete on the same level as other trap killers without having to rely on this one-and-done mechanic that doesn't feel like it gives any feedback to survivors. There is no counter play for survivors right now unless somebody just wants to follow him around the whole match and disarm the traps as he places them. This is VERY BAD design as it is a mechanic that is beneficial to SWF teams on comms which makes solo queues put at an even greater disadvantage. Even if I disarm a trap it means nothing. I can't tell other survivors where the trap is. The killer can just go back and rearm it. The alternative is to just ignore them and play the objective but then you're playing in a map thats getting increasingly covered in traps. Its a Lose-Lose for survivors.

I think that Trapper should play closer to how other trap killers do. Here are a few ideas:

• He should have an infinite pouch where he gets all of his traps.
• He can only have so many traps on the map before they destroy the oldest trap that's been placed. Both of these encourage Trappers to quickly place traps and move on instead of taking the time to place them perfectly into terrain so that they're impossible to see since they can just keep rearming them once they're perfectly placed.
• A disarmed trap should be destroyed. Again, the focus here is on reducing the benefit killers get from exploiting precisely placed traps which exploit terrain since its apparently quite difficult to prevent this from occurring its best to just incentivize behaviors that avoid it.
• A trap should at most injure survivors. Getting trapped while injured just results in the survivor being trapped until they escape where they're released in the injured state again (maybe force them to mend with addons).
• The loss of a health state should occur at the time that you are released from the trap. This way if you get trapped while healthy but escape yourself you lose a health state and when you're in a trap (again while healthy) and the Killer hits you, you're still only losing a single health state. On the same note, if you're injured when you trigger a trap, escaping yourself leaves you still injured but with some potential debuffs (discussed further down) or if the killer hits you, you get downed.
• Releasing yourself from the trap would be a good way to implement the SM QTE that you worked so hard on. This would allow you to balance how long you're in the trap based on how long the randomized QTE is.
• Because Trapper cannot teleport to triggered traps like Hag, implementing that delay function of them being "trapped" in the "trap" would counteract his ability to not respond to triggered traps from across the map. It will delay progress. This allows the killer to gain information on where Survivors are and what they're doing. A trapped Survivor is not cleansing totems, healing teammates, or making progress on gens. This would allow for them to get a lot of benefit from injured related perks.
• Hemorrhage and Bloodhound could be base kit when Survivors trigger a trap and escape. This gives the Killer continued pressure on the survivors without having to actively be there while also giving him the ability to follow up on Survivors that have fallen into his traps without needing to camp them.