I have ordered one of the new Gen3 with flow meter. I have an issue however that the pool fill is tied into one of the master lines. I have a potential solution for this however, but will need some flexibility from Rachio to achieve it.
to fill the pool today, I simply open the master valve, and a unused zone. This fills the main line, and if the pool needs to fill it will.
I could solve FP leak detections if the new controller could allow master valve / dummy zone open only configurations to not trigger leak detection. I am sure that there are many out there that are going to discover that the autofill is tied into the main line.