Tarja - Nightwish has gotten too big for PPUSA. So, Tarja would be the next best thing. I think Glenn might make a play for her. She would EASILY be a 5 or 6. However, the problem will be her never ending search for more money, never mind the restrictions that Cabuli will pull out of his tochas. It will make Glenn say, "Thanks, but no thanks."
Within Temptation - Why Glenn keeps trying for them is beyond me. They have no interest in PPUSA, as they will not even give Glenn the time of day.