What do you mean "reconnect all devices"? I don't have any devices that don't reconnect automatically when the wireless comes back up. But I don't have much interest in home automation, if that's where you find devices that need hand-holding to connect to wireless. I need the exercise of actually going to a light switch to turn it on or off *smile*. Yes, you would have to set up guest networks. Personally, I keep try to keep my detailed settings as simple as possible (but not simpler *smile*)...like radio channels and a couple of other wireless settings, custom DNS, adjusting the DHCP pool, turning off UPnP, and that's about it. Couple of other miscellaneous settings, like turning on traffic statistics, but it goes pretty quickly for me.