Why? Why? Why?! The master valve takes a valuable zone and even shows in the list of zones. Why can't we turn it on and off by itself there? It just taunts us. There are so many crazy, cool, adaptive features in this system, why can't basic control of the master valve be implemented? I can't not have it turn on for many of my zones where it isn't needed but at the same time I can't turn it on myself when I do need it. It's stupid that we have to turn on a drip zone to get the master valve on to use a spigot on the line. I'm going on six years of watching threads on this with no updates and no feedback, just a lot of people asking for it. C'mon RainMachine/Green Electronics, it's time to fix this.