I think viewers are just as important as creators. Yes, if you get youtubers over you also bring your audience and that helps but I think reaching out to people on facebook that you know and love helps bridge the gap for them to at least consider it. Good points @jumowa.
For me, I am not nearly as excited as bringing over big stars as I am promoting people that already are vested in the Steemit platform. Bringing those people over has it's advantages although I wonder how much bringing over people with promises of rewards will do for the long-term price of steem. If everyone is doing it just to cash out, and you are bringing in the "big fish" from youtube and twitch, you are giving huge rewards to people not at all vested in the platform.
Maybe I am playing checkers while DLive is playing chess. For the long-term it probably is good to get the platform out there.