the key to time should have like a factor so that you could fast forward any amount of days or hours or to slow back time and you should need the tracer and the 6 segments to craft it

This has my support, I felt it needed some functionality too.

The key of time is used to restore balance to the universe in the tv series. What does it have to do with time travel? Just do it with your TARDIS

 The tracker will help guide you through the time vortex to the next piece of the key to time.

Maybe implement the feature in Story Mode?