I appreciate your enthusiasm, but one of my biggest problems with any version of H2 is the inital premise: the stupid shield over the Earth. Unless you can make that go away.......well........
Oh, and immortals coming from another planet kinda blew it for me too. In my mind, the film just went in so many wrong directions all at the same time. If it had been anything other than a Highlander film, it might have been better - it just seemed like someone took two very disparate films, and tried to slap them together.