Currently if you have a google home, or a google pixel, or more than one google device with "Okay Google" enabled, ALL OF THEM GO OFF AT THE SAME TIME. And cause all sorts of frustration. All we want is google to allow us to change the hot word to what we want to prevent confusion of devices. 

We understand that google wants to brand their products, promote free advertising of their product, and remind us who we are using, but there is a line between healthy branding and absolute terrible functionality.

If you have more than one android device, set them next to each other like you would have in your home, and say "okay google" and see the response. It's especially annoying if you have the new Google Home, as it takes priority but can't even send text messages yet.

Plus, "Okay google" doesn't really roll of the tongue well...