This is a curious idea, but not sustainable long-term. I think that's sustainability is the word that people are worried about. BUT I do think this idea could be repackaged in a different way that would work: as a Bounty. You could think of this as a shot in the arm to get the community moving and growing again. First, you market a $20 bounty for all users who post within a given timeframe or day. (Let's make it Christmas Day December 25th since it is quite literally a gift, and $50 is a bit much.) What happens is that everyone will begin to market to their friends and associates the bounty, giving Steemit more notoriety. People will sign up in large numbers. A small percentage (as it is now) will remain from those groups. Then the process could be repeated again and again. But you also give the bounty to current members, so that people keep coming back after they leave. Think of this like that ubitquitous 20% Bed Bath and Beyond coupon, or that ever-persistent $10 Kohl's Cash that ends up in your mailbox every month. It's ten bucks... but you have to come back all the time to use it with some effort involved (Using it on certain dates, have to use Kohl's card, etc. etc.) There has got to be an upside for Steemit somewhere in your idea, and I think the idea of a bounty is more suited for this sort of giveaway, and gives more bang for the Steemit Backed Buck.