The sim details I’ve done have been pre-briefed and more for getting people happy with the mechanics of a baulked landing and the lack of need for panic as opposed to throwing an unexpected scenario in there. I think it would be hard to manufacture something that wouldn’t get a competent crew to go-around before the event, or if the timing was out, lead to a “accident” in the sim, which is of dubious training value.
Overall, I think it’s better to get pilots familiar with a rejected landing so it holds no fear. Then it becomes just another tool in the box to be used when necessary.