Don’t get me wrong, the Nest Manager is a beautiful integration and the dev has done miracles in putting it together. But the limitation on the api’s have made it impossible to make much use of the nest protect integration. There aren’t many options when it comes to smoke alarms which are as nice as the nest protects. I have a few, and it annoys me how locked down they are. If nest opened up the api’s for some of the features like temperature, motion, lights and speaker they would have a must have product every HA enthusiast would buy. I would get one for every single room and hallway and quadruple the number I have in the house.