I use both overpower and flash. You guys try to put everything into your nice little boxes.

You know the good thing about flash for warrior? I don't have to waste time making sure all targets are in a cone. It allows me to do free hate basically as I don't even consider mp usage on my warrior as a loss of anything. Tossing a flash in with overpower spams allows you to not drop all your tp so fast.

There are plenty of uses for flash as warrior.