Perez depicted pre-Crisis Cyber and Shim'tar together on his Wonder Woman Through the Ages poster. Elsewhere in the poster he had the various incarnations of Cheetah, Circe and Psycho together, so I think that was his way of telling us Cyber and Shim'tar were linked
Clea's daughter Ptra is probably Diana's counterpart when we bring the Clea stuff in. Clea and Ptra act as a warped mirror image to Hippolyta and Diana. Way more should be done with that than it is.