I dont think it is fair to chose between dance or concept... Both are important at their own levels...dance without any concept seems directionless and concept without dance is useless!!
I am not a fan of Mouni, but I really loved Punit's choreography yesterday...it had deep meaning within...As for Shakti is concerned, she is a brilliant performer, but somehow i think Tushar does not bring up some new innovative ideas, like Punit does... Look at previous year's Lauren's performances...Each of them had the best dances and the best concepts...they were so unique...Similarly, i dont like Akshat's performances, but his concept was really touching...And Remo has already seen this much of Shakti so maybe he is expecting more... Her performances in the beginning were amazing...her concept of Arjun-Krishna was brilliant...so cant really say that concept does not matter bco if it was so, Shakti wud not have got full marks for it! Nonetheless, i think it is lack of effort on part of Tushar and not Shakti. He needs to be more creative with concepts!