So steemit is invite only for the time being, this was expected to be honest.
Here's my idea:
Add an invite system, give every user (eg.
SteemPower/1000) a fixed contingent of invite links on weekly/monthly basis.
Those who are heavily invested in the platform via SP do have an incentive to not throw invites at anyone & to prevent fake accounts to pop up.
Note: this is just to pass the queue, this system should still be offered.