Thanks luckybit, this is something we have considered!
I am personally of the opinion that intellectual property is invalid due to its violation of physical property rights and free speech. This includes copyright and patents as these are government privileges.
That said I am a firm believer in subjecting people to their own laws. Therefore, I would like to see a such a license that only applies to those who assert that copyright and patents should be enforced against those who do not consent to be governed by copyright or patent law.
I believe that such a license would make people more comfortable with the AngelShares Social Consensus and thus increase the rate of contribution and development due to reduced risk.
We will start a bounty for such a license and then direct our lawyer contacts to the opportunity.