I fully agree with @beanz. From the market site steem as investment doesnt look good with the inflation of at least 100% per year. Even if 90% is given back to Steem power holders, still the market graph looks going down for an outsider. The hyper inflation also destroys the incentive to use steem as currency or to provide liquidity.
Reduce steem inflation rate drastically
Therefore i would suggest to reduce the inflation of steem dramatically to 10% per year. 5% could go to steem power holders.
Reduce the time period you must hold steem power drastically
Also I would suggest to drastically change the time period that you must hold steem power to at max one year.
Give incentives for users that verify their identity
We should also think about giving incentives for new users that fully verify their identity. This could look like the following: If you verified your identity, you get 30% interest per month, until the value of your steem power equals 500 steem dollars.
Give incentives for using steem dollars to buy something
Also we should think about incentives for buying something with steem or steem dollars. For example you get up to 10% of the purchase price if you buy something from an verified steem merchant.