Nice to hear about the future plans!
I think that if the form design is throughout responsive it needs no parameters in the Wizard at all, because of it's design it will adapt to any device.
Of course you need styling etc.
Only thing I can think of is: Label in Text Field, Label in Text Area or Validation Message in Text Field, Validation Message in Text Field to make it even more responsive.
With HTML5 and CSS3 implemented in all modern browsers it's very easy to make a form without the use of WURFL!
I think it makes the extension unnecessary complicated and more expensive (when using their cloud) for the user. Every normal server can handle forms and email programs based on PHP, Ajax and jQuery. But it can also offer some great advantages it all depends of what the idea is and that we are not dragged in yet a other cloud service.
I hope WURFL is not going to be the next thing that is holding us back from buying Webassist extensions (It doesn't necessarily need to be and depends of the future plans and the way WURFL is going to be used!).
I'm curious the hear the plans behind it!