There needs to be a proximity limit or something on traps for the killer. A killer should not be able to stack 3 imposters on one given spot. Without rockets and duo teammates tanking the hits, there's no way if everyone isn't up on 4th.
This picture shows 3 imposter traps on Amusement 4. He eventually also placed 2 on Performance 4. Either place a proximity limit, or introduce other ways to disable these traps without alerting the killer. There isn't enough rockets in the game. This kills the solo experience.

