V1 is a very critical speed at balanced field length airports. It means as we all know we can stop before and go at it. If you don't abide by it you get in big trouble or maybe die with your passengers. True, longer runways you can probably still stop but you are still in trouble. If nothing happens and you reverse to lower speed before brakes you still have the explaining to do if it gets reported. Safety is #1 so use that to decide what you are going to do. The AA DC10 at ORD would have been just fine if they hadn't followed company procedures and slowed down to V2. They might have been in trouble but they would have been alive with their passengers. Just a thought.