I share your concern. Rachio started out with great ratings for the hardware… and it was one of the first and best “smart” controllers on the market. However, as an installer, we have started using others because their focus now appears to be fertilizer. I have asked why their developments didn’t lead them to designing a rain sensor, or a weather station that linked seamlessly to their controller, or a controller beyond 16 zones. We install many commercial systems requiring many more than 16 zones. Linking two controllers is not feasible, most customers want one controller. We have to use another manufacturer.
I would encourage Rachio to refocus their efforts on their hardware & software development and leave the very competitive fertilizer market to others.
Just my .02.
