I love watching dance groups do covers a few days or a week after the artists' MV's drop, especially if they're gender bending ~ guys doing girl group covers, or the reverse, along with solos.
I always wonder how long they take to memorize the choreographies. It's always amazing and awesome to watch.
For me as a viewer, who knows nothing about dancing, all of them crush it!
And when you watch some artists' reaction videos to dance covers, they feel the love and support from the dance groups and realize the impact they have made on the dancers for them to spend time learning the choreographies.