Heimer's turrets really shouldn't be able to immediately block skill shots when he places them
Playing a skill shot reliant champion against Heimer is like bashing your face against a wall, because he can just drop a turret between you if he's ever at risk of getting hit by anything.
It would make a lot of sense to make them similar to Neeko's clone, and not allow them to block skill shots for a second or so after he places them.