I don’t think there are many cases where it would be acceptable to increase project risk to shorten the time duration of the project. Depending on the project adding more risk to an already moderate to high risk device could be the tipping point for the harsh consequences of a risk potentially going wrong. Adding the extra risk just to shorten the time frame of the project could be a moot point if the increased risk adds time to the project in a different way which is a real possibility.