Mayuresh/Vrushali have had some good choreography (the Kalki act could have been great, the Paso Doble, the Pantomine), but they have not been executed flawlessly by their contestants (namely Avneet) that says two things
1) They could not teach their choreography to their dancers to the extent that they could execute flawlessly and/or 2) they did not create choreography with the capabilities of their contestants in mind.
I think it is more of the former. Manoj highlights this point. So many agree that he has the talent, but it needs to be refined. He is growing as a dancer, but not as much as I could have imagined he would have grown after so many weeks of so many different styles... the culprit for that would be the teachers.. I think this is what is holding them back. Dharmesh and Jai are good teachers and choreographers. We have been seeing their students grow over the show as dancers.
I think something similar could be said for Remo. We didn't see huge amounts of growth from his contestants, when they had the potential. Nikkitasha and [i forget her name - the girl who auditioned with ik tara] are examples. Good choreo not really best teacher.