Man I really need my motion sensors back into st, this seems to be the only solution minus not using a bridge, anybody find a work around?
The Hue motion sensors connected to a hue bridge will be visible to both Alexa routines and HomeKit, so those are two possible alternatives. If you aren’t already using homebridge, I recommend looking into Alexa routines. 
Looking to use them to trigger home mode in smartthings. My Samsung motion sensor is burning batteries hard lol
You can do that via Alexa routines: have the hue motion sensor connected to the hue bridge trigger an Alexa routine (not a smartthings routine) that turns on a smartthings virtual switch, and have that virtual switch coming on trigger an automation that changes the mode.
Any idea what happened here? These used to work fine and, in the last few years, something has happened to them and they destroy batteries in a matter of hours.
I believe I stopped noticing it, not sure what changed
Did you ever get the busch jaeger hue link working from ST?
Unfortunately no. IF I remember correctly, I had issues with buttons mapping (the numbers detected when pressing the buttons didn’t make sense to me). I couldn’t figure a logic out of it.
A different community developer has created an edge driver which works with the new architecture and has some similar features. It does require a hue bridge, it runs locally, it can access rooms and scenes created in the hue app, and supports a number of different devices connected to the bridge. So it may be a good substitute for the new architecture.
Thanks for the link @JDRoberts . It also utilizes the new Hue architecture as well so it supports their newer hub (square)