[Goldar's Revenge]

The original plan on Saban's side was for Cybertron to be a Fox Kids show. Fox said no because they didn't want to have too much of the same thing. That apparently changed by the time Masked Rider and Beetleborgs were created. But Saban did end up getting full control of Fox Kids by the end, so that could have played a role.

It was never the plan for the Tommy character to star in Cybertron. At least from what has been leaked. We can't say why they chose a new character. Perhaps they left it open for Tommy to still return to PR and not be saddled by whatever happened on Cybertron. Its not far fetched since Tommy was kept on MMPR ulitmately. So it stands to reason there was a lot in flux with JDF and his character's future on Power Rangers.