To me the real utility of this, is testing "concepts". The way I would see myself using this is to create a few keyword campaigns, and then send them to these pages to see how much actual interest there is for the idea.

Perhaps this might be a "premium" feature, but what would go along with this is a root "project", with multiple landing pages. Then I'd like some analytics to compare. Basic conversion funnel stuff. If it integreated with google keywords directly, that would be awesome.

I'd also like the customize the page a bit more too, it's very generic looking today.