You can just entry all over front site to push with a safe tp away and if it's true that you can take your trap back then it's even better to be able to reposition both your trap and your tp that way even rotating provides flank watch and safe tp entry.

Edit: After what I've read, chamber should still be op but he's been limited to a single site use, he can no longer be a whole map protector with the range of the trap and a single tp spot instead of two on each site. Still op cus he can hold agressive angles almost perfectly with the trap on a blind spot near him. Chamber mains have yet to prove his worth to stay in s tier.