I know there is a V3 in beta right now, but as a brand new user, I have one suggestion I'd like to see incorporated into a future update. I would like to see the ability to group zones so that you can identify them by a name, such as 'front yard', and then be able to kick off a watering cycle with the Amazon Echo/Dot by simply saying something like 'Water front yard for 30 minutes". It could divide the total time by the number of zones you've added to the group or it could read it as 30 minutes per zone...or possibly even specify it for either by adding 'total' or 'per zone' to the Alexa command.
This would also be useful if you have multiple gardens or landscape areas with plants that you water regularly, you can set up the garden zones and then have Alexa water only those zones by command.
I know you can do workarounds by creating multiple schedules and running them manually with the app, but this would be a nice feature to be able to water different specific areas in succession by just using one Alexa command.
So far I'm very impressed with my Rachio, but I'm already spoiled and asking for more.