I know this DAC has just started, personally I believe that BitShares LOTTO is a great idea as it decentralizes the lottery from governments and so call "charities" with huge administration fees.
First of all I assume the initial DAC, BitShares LOTTO, will be for profit, as it will fund the DAC development and of course pay the shareholders (AGS / PTS).
Based on that assumption I would like to propose the creation of a complementary fork (if you don't plan to already), to create a global lottery charity, this will be purely for non profit and no administration fees. All the hard work will be put on BitShares LOTTO so it won't be necessary to add extra fees.
All the profits (everything but the prizes) will go go directly to health care (public hospitals, residences), public education, research (cancer, aids, anything). Each daily / weekly draw can be for a specific cause.
This could have the possibility to be a true global charity, and hence remove huge waste, especially on research areas.
Rules of course will be different (IE.. euromillions vs national lottery vs other old style ball lottery) and complement each other as other lotteries do.
This project can benefit to the whole ecosystem of DACs, one of the hardest things will be the global purchasing of tickets, mainly exchanging fiat for a ticket. Money conversion is a general problem to any DAC, and project like this would help to open the barriers.
We should not be shy and with a project like this we should ask for resources of global players, which already have simple purchasing capabilities (paypal, microsoft, amazon, google, twitter, facebook).