Server Restarts

One thing that bothers me about Tuesdays and any others days that blizz decides is server restarts. They give us 15 mins to finish whatever we are doing. I was half way through with a group in a random when the warning came. With only 15 mins to complete it, this group didn't have a chance. Blizz should extend the warning to 30 mins that way people anywhere have enough time to finish what they are doing no matter where they are. Its hard enough to get a group capable of doing the randoms without much issues, please don't mess it up with limited time before poof gone.