It's a great platform, with a lot of potential, but it's still very early in its development. We have the power to make this amazing, or to kill the goose who laid the golden egg - and that's what makes this a fascinating social experiment.
We can create a great onlne community, even a society, which truly benefits those most deserving. And I really hope we do - that would be amazing. But that's not necessarily how it'll play out. We can equally F it all up.
For me, the biggest challenges are the learning curve involved, and the expectations new users arrive with. If people want easy money, they'll be very disappointed - and leave. This is what stands in the way of Steem truly taking off.
I do believe it will take-off, and once it does, the next challenge will be what's blighted other social platforms - noise. A massive amount of content competing for attention. There'll be no algorithm to weed out the crap. How do we do that with a no-censorship ethos?
What we should all remember, from those with the most SP to those with the least, is that a rising tide floats all boats. Yes, some might do better than others, but it IS possible for everybody making a contribution to gain. I keep my fingers crossed.