Kit aircraft are cool and fun both to build and fly, but I think that a raffle event would have better turn out with a certified aircraft. Not everyone has the time, space, or commitment to build a plane.
There is no one size fits all. Not everyone is going to find every grand prize in the sweepstakes is exactly what they want or desire. Doesn't mean they don't jump at the opportunity to win. I think Frank said earlier a kit plane has all the implications of a free dog, well, guess what? That is true of any airplane given away. Have to house, feed, maintain and pay taxes on it - IOW it comes with a big bill for the time you own it. Up to this point, every airplane in the sweepstakes has been a certified aircraft - if you include LSA as certified. Perhaps it's time to offer a kit plane. After all, builders are 1/3 of the membership. An RV-12 would be another LSA with the exception that is has to be assembled.