I think you're onto something with your suggestions, but I'm not sure making things random and lottery based is the true solution to the dillema you sketch.

I've elaborated on my views toward Steem marketing and social capital here: https://steemit.com/value/@spookypooky/posts-on-steemit-aren-t-valuable

Perhaps a hybrid structure of chance and connections would be fun and engaging at the same time? Let me know what you think!