Murder mystery new role

My idea is a new role. The traper. The traper can set traps for the murder to get stuck in for 5 seconds. Only the murder can get traped.
I have another idea to it is the murder can change somone else into a murder 1 time per game, if there don’t have a bow. It could maby get rid of one abilitys for the murder to change someone else into the murder as well.