Based on your list, I would like to see:
- 5 GHz WiFi. IOT devices need to start leaving 2.4 GHz WiFi behind.
- Hardwire ethernet option. Not sure if this will be of any real value, but it would be nice for those inclined to use it. It might also make installation easier in locations on larger properties, such as a remote shop/shed, with poor WiFi coverage.
- Simpler app interface, making it easier for the layperson to set up. I know this isn’t hardware, but it is needed. I shouldn’t need a degree in irrigation and agriculture to set up my controller.
Otherwise, I think it pretty much does what is needed. I am still using a Rachio Gen 1 controller, and it works great for me!