Some new Z Wave products I would like to see available would be a z wave fire alarm and carbon monoxide alarm. If either activated or went off line, you would get a SMS message. It should also monitor the battery life like the door lock does.
A z wave door bell. When someone rings the door bell, the outside camera would activate and you could see who is there. You could also set times for the doorbell to ring, if you don't want to be bothered early in the morning for us people who work the graveyard shift. This too could monitor the battery life as the door bell I have now dies without any knowledge.
I have seen on other websites an outdoor module. This way I could plug my holiday lights in to it and use the timer mode.
I would like to purchase either a wall switch or an outlet socket for my porch light. This way I can control through z wave when my porch light comes on and goes off.