I too only see generally two shows a year, and perhaps that is why the theme is less perceptible.
I don't mind themes. I loved 007 and Machine. ("I get it!"). Didn't really enjoy the Cadets so much ("I get it already!"), but that's just me. I liked the Crossmen in '06 -- really fun. But what I really love is pounding (or beautiful) music and energetic, eye popping drill, and it isn't necessary for the show to have a name for me to enjoy it. Themes are here to stay, and I am fine with that, but my question is really more: do good GE scores require the theme?