As janetDAYZ said, I don't understand why some of you don't want Ciara as part of the tribute.
As far as I can see, it's only Ciara, Tinashe, and Beyonce who can perform choreography well. (Yes, I purposely left Britney out). Maybe Janelle Monae.
I'd personally love to see a tribute from all of those ladies (not Britney), each taking on a classic Janet song, like Janelle, Alicia, Patti, and Esperanza did for Prince.