One simple way to give incentive for people to power up is resetting the interest growth of the power up to just as described in the white paper. 0,19 Percent per day when powering up. And when powering down total steem power will be turned into steem in 104 weeks. At the moment no-one wants to power up, as the interest on steem power is higher than what they lose when powering down. Making them even earn more steems even when powering down.
Smooth made a good comment about attracting new investors by trying to make steemit into more than just "blogging". But as Dan described earlier you guys are probably working around the clock to do this.
Really Ned. Resetting the interest growth to what is described in the white paper seems to me the easiest way to quickly distribute steems and give the incentive for people to power up. For the rest, I feel the free market will solve the other issues by itself.