Let me post my comments from a participant point of view, who keeps on enjoying BJ 3 times a week for 3 years and agrees with ErinC on her earlier remark as follows:
"Boy, once you start to know the choreography, you can really dance a lot harder and get your heart rate up." Exactly! I think G has found a winning combination for people who want to dance their butts off *and* want to get their heart rates up - even if it is just by accident.
In latest releases such as BJ48, 49 and 50, I did not think the repetition of choreography was tedious as some instructors say, rather, I totally admired G as the lesson goes. He proposes slightly different moves for a SAME-LOOK choreography by introducing different musics and remixes.
For example, on the first lessons for BJ48 and 49, I would almost puke, because of the intensity of exercises created by the repetitions and long tracks. But a few lessons later, I stopped following the instructors' instructions and moves, and found out how to use the momentum and inertial force of my own moves and influence of gravity. In addition, as different musics present slightly different timings of moves, sometimes I could add moves of bodyparts which instructors did not mention. It worked on me, and I did not feel tired at all, despite the amount of sweat. I totally enjoyed the "repetition" parts.
Some instructors may think that this is because I am a "dancer" participant, but it is not relevant. (I also disagree to such a classification of participants, but I do no comment on this point in order to keep focus.)
In another old thread in this forum, I posted my concern regarding instructor's discretion. That was because our instructors started to modify the choreographies really obviouslly from BJ48, which would have been a solution to circumvent the original repetition that our low quality instrucotors just thought too long.
For example in 48, after the "It's show time!" vocal, a same set of moves repeat. Then, our instructors split the class in two and told us to do the moves alternately. I thought that it was terrible, and not to mention, an anauthorised modification. I did the original. I was the only one on that day, but later some other participants seemed to do the original. Then, the instructor stopped doing that.
Such solution only occurs in Japan, because instructors do not care about copyrights and licence contracts. My POINT is that the choreography by G is really genious and we do not have to worry about future releases. Rather, we should take time to understand the point of choreography, as it is just fun for participants.