Best film I've watched in a while. Can't wait for the sequels. I hope their next enemy (an immortal) has made good use of their immortality to build a world organization, or a cult, have absolute control of congress, the military or the NSA , put a god clause in the founding documents of America, be the hidden hand behind the Vatican.
The more powerful they are, the more enjoyable it would be. Heck, I wouldn't mind if they MADE immortals.