Fan CastingTransformers: Reboot Universe

How I would do a Transformers reboot. It would be a soft reboot via time travel in the seventh film, so the Bayverse would still be canon to an extent, where the plot is basically that Unicron woke up, turned Earth into a terminator style dark future leading to an Autobot being sent back in time to fix things, that's just the abridged version and again, what I would have done if I was rebooting the transformers unread more