Currently, you can still communicate to the switch via Android's Hangout chat client. Hangouts is dropping support for the open XMPP chat protocol. It isn't clear to me that this means support will be broken by the transition - but it is certainly a point of concern.
One much needed feature, IMO, would be the ability to configure an outlet as "RESET ONLY". This would be handy for outlets that handle the internet connection for the switch itself. Currently you can mistakenly turn off your cable modem remotely - and then have no option to turn it back on. Careful!