The dance lessons and steps are a grand resource about which too much praise can't be offered. In the perspective of stengthening a Atlas resource, I offer two suggestions below.

It's a small thing, but it would seem easily addressed. It would help one observe the ladies' leg movements and steps if the women in the videos, if wearing slacks, worn tighter ones, or wore shorter and less full skirts.

And, while it's more work, potentially a lot more work, it would be nice to have videos that showed steps from various perspectives -- from behind the man, from behind the lady, from the side of both, and sometimes from above (to get a good perspective on movement of the couple around the floor and apart and together.