Other than being an awesome exposition of a Kickstarter project, this is an example of incredibly valuable feedback. Now thinking what I can do to stimulate even a fraction of this level of customer feedback in my startup...
giving your customers $150k is probably a good starting point.
kickstarter is another of those online businesses that challenges the traditional definition of customer and supplier. Ze Frank isn't really their customer in this instance, he's more like a supplier, providing a service worth a large amount of money to kickstarter's customers (the donors). that much feedback from standard customers isn't really something you can expect, but if your startup has any transactions of that scale it's not unreasonable to ask for a meeting to get very detailed feedback as part of your contract.
And I've seen the waterfalling prizes before, where you could end up with several things for what seems to negate your original backing offer. Ze Frank's word of warning here is incredibly valuable.