Yes, I burn all 16 Rachio zones for my 12 zone irrigation. My prior Hunter (as all commercial controllers have except for Radio) controller had a well recovery in between every zone. I've lucked out that inserting a lengthy dead time every couple zones hasn't drained my well. However many others that I know will not take that chance with Rachio because they fear running the well dry or sucking silt.
For those of you waiting for well delay, please take Note that this conversation is now 4 years and counting, the well delay feature Has been high priority for at least two years, and we've gotten the story multiple times that the software is complicated and focus is on rewriting to make it more robust.
My takeaway from Rachio's continued words and no action is that this feature ain't coming. To bad that they just don't get the importance of this feature, must be that they ask are in town water. This subject is #7 on most active topics too, so as a company this doesn't show good judgement.