If you are talking about a rifle match, I have no opinion on this.
In IDPA I absolutely HATE blind stages. There is no way to create an even playing field. People will help their buddies that haven't shot it yet. The staff that are also competing for a trophy will have an advantage if they helped set the stage up. 14 years ago I shot an IDPA match in Texas. One of the competitors beat me on that stage by 20 seconds. There is no way he did that to me without help. If you insist on doing a blind stage to make it more realistic, then set an obtainable par time and just add penalties to the time.
There is also a safety concern for me. I have personally witnessed a competitor downrange pasting targets when the next shooter was about to be given the start signal. There is also a video floating around of a USPSA stage being run while someone is downrange pasting targets. Multiple targets were engaged with someone in harms way. When I am the next shooter, I like to personally verify the range is clear before I go hot. If I shoot someone accidentally, it's my fault. I'm the guy that is going to be held accountable. As much as I want to trust the match staff to verify a clear range, I trust myself more.
I'm of the opinion that range safety is just something many people pretend to care about.