Addons in general is something that the Kickstarter probably could benefit from. I understand wanting to avoid external management sites and that overhead, and the admin overhead at the end of the campaign, but there's a few low-hanging addon fruit that can easily be picked up with just the end-of-campaign survey. Additional game copies (either alpha/early-release/release at respective prices), the OST, and maybe buy-a-forum-badge-upgrade for $5/$10 a tier. It also saves the clutter in the rewards list from all the 1/2/4 etc copies.