Thanks for reaching out to us - we’ve spoken before, I believe. I have a home with about 240 active devices. The migration to the new app has been far from smooth, to the point where I am concerned about the security of my home - happy to talk about that in another thread, but let’s discuss my use case.
My home consist of multiple services, but let’s just focus on four: smartthings, Google home, lifx and Hue. Prior to the switchover, smartthings was controlling about 70% of my devices and sensors directly. The rest were controlled by the OEM’s cloud services. Smartthings and those lighting services interacted fine, but I found that voice control was better handled by GH talking directly to the other services. It was faster connection/response time, and allowed me to have the lighting features more easily controlled by voice.
If I wanted to control a smartthings scene that contained a hue or LIFX light by voice, GH would talk to smartthings, and the scene would run.
Now, however, smartthings is running the show directly. Lights react slower, and I have lost the ability to access all of the attributes of the lifx and hue services by voice. The new smartthings app also stops device connections as a matter of course. (at any point in time, roughly 5% of my devices are “offline” according to smartthings (I assure you they are not), if a hue or LIFX bulb is one of those 5% GH will not control it.
What has made this worse is that I am no longer able to edit, create or delete scenes in the smartthings app if those scenes contain a light that has dimming capability.
Essentially, I went from 240 devices operating in relative harmony (since each was controlled by the service that made the most contextual sense to control it) to 240 devices that may or may not work as intended, or - in many cases - work at all.