I agree. Particularly on the super athletic moves that are high-impact, I would love to see low-impact options that can get the heartrate up just as much.
I know Cathe is usually great about saying that there are other options and to take it at your level, but sometimes seeing is believing
Another vote for a modifier here. Thanks to the original poster for starting this poll.
The only reason I want a modification for when I get pregnant. Other than that I love high intensity. I would be very disappointed if the serie is low impact.