The professional dancer, who triumphed with Mark Ramprakash in the 2006 series, admitted that she can understand why producers opted to axe Arlene Phillips in favour of Alesha Dixon this year.
Speaking on Live From Studio Five, she commented: "Do you know what, there are so many judges in the world. If you limit it to four then you think that only four people have knowledge. Our world of dance has been around for 120 years and we have hundreds of professionals.
"I think it's only fair that other people should be given a chance. Otherwise, no offence, you'd think those four are the experts. I think it should be rotated [and] I think that other people should be given the chance to have a voice."
Hardy also revealed that she expects Phillips to contribute to the new Strictly series despite her axing.
She said: "She'll probably have some involvement. I don't know myself at the moment because I'm obviously there to give advice and expertise. I did the choreography last week for the group dance and I think Arlene will be coming in for little things like that."
Hardy is not competing in Strictly this year following a "mutual decision" between herself and the BBC.