Time fuckery

So, now that Cadia has fallen, the great rift has expanded and time isn't what it used to be... What are the chances, that one of the temporal annomalies reverses time around the Emperor? Maybe deageing him back to health/a point in time before the events of the Heresy?

Mind you, i am frighteningly fresh to WH40k and all i know about this particular thing is: The planet fell before the Cadians did. The great rift expanded There was a "great night" throughout the galaxy Time does not move like it used to.

I just thought, that this was a interesting thought experiment.