Since Rachio is getting into lighting, I’d like to suggest an in-ground pool light control. Would likely need to use a type of powerline adapter to send the control signals over the AC circuit. Many of the existing pool lights work by “dumb” switch cycling off/on for colors or patterns, but Jandy and Pentair have systems for total pool control (lights, pump, salt generator, valves, etc).
If Rachio could make a multi-colored pool light kit with wifi app control and scheduling for around $500 I believe there’s a market. Pool automation systems can be expensive. Many of us just want to the ability to control lighting at an affordable price.