Each to his/her own.

Who would you like to see from the mainstream more specifically?

I'm of the opinion that Steemit is not yet ready for mainstream adoption, there are too many pressing issues that need to be taken care of before mass adoption can occur. Issues of inequality, flagging, scams, bots and abuse are still very real threats that need to be addressed by the leadership and the community as a whole before marketing the platform to the mainstream. If these issues are not dealt with, then when millions of people flock to steemit they will see that Steemit is an oligarchic system presided over by a small number of whales with immense power. I do not think the masses will want to participate in such an ecosystem in the long run. But this is only my opinion.

thanks for the interesting comment