Well that is an interesting point to consider in the light of recent rapid Steemit membership growth - perhaps there can be a future take on this with tiers based on the data available on each user (and there's a lot - number of followers, account balance, join date, total upvotes their posts have received, etc) and out of that is easier to look at a pool of minnows who could do with some exposure, thus identifying that possible diamond in the rough and giving them their big break.

Somewhere between what @curie does, and the likes of those minnow support initiatives.