I like to see type of mentality. Idea is good. Important is how to implement this? I think that some sort of complexity is here in starting but main point is new user comes here for rewards & earning because our advertising is like this at social media. After some attempts he realize that it is very difficult to earn here, So they leave the platform. I don't like this.

So We have to encourage new users

1. By upvoting their posts, not downvoting.
2. Take them in easy community and try to grow them.
3. The community should have sufficient SP to protect/grow each new steemians.

I think slowly he knows all things and don't feel any technical difficulties. We have to find their interest first in steemit.
That's why, we started a community called 'LAKSHMI' for all new comers without downvoting concept. But currently i am upvoting from my account. We don't have good SP their. We think 1M SP should be min for this kind of activity required. Hope for best, may be one day came and we get that much SP to protect and retain new comers.

We may be wrong but we think like this. lets see where we reach.