Would it be worth buying a hue hub?

You can do this with my driver. It exposes the motion sensors to ST and you can setup automations to turn on all sorts of things. I do this with mine as well. Using the sensors through my driver also allows you to have a better cool off period for the sensor as well as being able to enable and disable it through automations. I have found Hue to be much more stable and fast so I tend to set things up over there and then use my driver to expose them to ST.

I have some other features on my roadmap that I plan to add once they are available in the Hue api:

  1. Mimic presence
  2. Geofencing for presence
  3. Hue Cameras

These aren’t possible yet, but when their API catches up, I plan to be an early adopter.