I'll chime in with an "I do not like this idea"

The Kickstarter campaign has relatively few exclusives - the non-com pet, flight aura, and Mogul spring to
mind. Other higher-tier rewards (costumes, textures, weapons, icons) were made "limited-time exclusive"
(Exclusive for one-year, with option to grant others right to use the thing). I feel that is a far better approach.