Oh oh.. Hold on dude.. I mean i have never felt that aashi is imp than sharon/ taani. She isn't. There are leads and the leads are getting their due. Each and every character is unique in its own way. You can't say that just because taani is swayam's sis, she gets to enter the gang.
Aashi has been a dancer for quite a while now. Vishakha introduced her. And I don't think cvs want to ghusofy aashi anywhere in taani's separate track. Each person has his/ her own individual identity. It's just that a dancer gets to mingle with the gang more. Because they can connect to her properly!