@Bulldoglowell - The activator switch locally attached to the aeon microswitch acts on the microswitch directly, independently of Vera. So, you would not want to implement your idea with that switch. Technically, you could but the light's behavior will be absolutely bizarre! Flick it On/Off/On/Off/On/Off/On within 3 seconds and PLEG resets it to 66%.
You could implement your scheme with an independent Z-Wave switch or scene controller. For instance, if you had a Leviton Z-Wave switch in the wall, but not directly attached to the lamp, you could create a PLEG that uses the Leviton as a trigger to stair-step through a series of dim levels for the Aeon microswitch such as you describe. A double On tap of the Leviton, within 2 seconds goes to 33%, triple tap goes to 66%, etc.
I'm not really a fan of such a scheme. It will not be intuitive to use for untrained users, something that I strive for. Reliability, well... you know. Also, it would require both an Aeon microswitch and a Leviton scene capable switch or controller, so cost becomes a factor.