I appreciate what is being asked, but it could get a bit "messy and cluttered" for the Rachio team.
Most of the folks who post on this forum are "lawn rangers". Their focus is maintaining a beautiful lawn. Me? I'm a gardener. Sure, I have a lawn, but it's only for entertaining purposes. My focus is growing things we can eat. Think Master Gardner and permaculture.
To personalize recommendations such as when to water, fertilize or aerate when each of us has different soil types, microclimates and vegetation types would require a huge database. As an example, I have two Iros in different states and very different climates. One is the Sonoran desert, the other high desert plateau. One includes a lawn, one does not. One has blackberries, cherry trees, apple trees and vegetables. The other has xeriscape, citrus trees, a small lawn and a large vegetable garden. One Iro gets taken offline for the winter, the other waters year round. And that's just one Rachio fan.
I agree with what @SMayo47 said: I don't want the Rachio team to try to write the all-encompassing app and appreciate what Rachio does best.
That makes $0.04.