3) additional reward for every backer(or every one that pledged enough to recieve the game) - an ability to change the appearance of currently worn armor and weapons into unique backer-only one. The pants and potion sound great but they look like something of one use only, whereas I think that backers would love to show off with awesome-looking armor or weapons.
Tbh, I'm against the idea. The bonus rewards (and cheaper prices) from Kickstarter are more than enough to me, and I think it'd be unfair to widen the gap between us and normal customers.