Then a striker or nova bomb just scored 6 kills. The bubble would still be destroyed as it is now. And since the bubble doesnt move your team can still run around and get a better spot to blast em when the bubble goes. If the defender drops it then dies, then you reward your team with a safe spot. It would require team work but the benefits could be as game changing as stormtrance or a well timed golden gun. As it is now, no one challenges the defender so its just 30+ seconds of wait time