This is actually a massive issue while I agree one person shouldn't be consuming 7% of the daily reward pool I think Hive account@dan downvoting him was a very unprofessional move and not a good sign for steemit.

As a game designer when you're building an mmo economy you have to understand that it is not the fault of a player if they find an unfair way to get rich quick and devalue the economy it is a fault of the designer and you do not punish the player you balance the game.

A better solution in my mind would be to have a daily reward diminishing returns affect. When somebody gets upvoted 75% of the money goes to the author and 25% goes to the curators to fight over it.

So all of Haejins posts are getting 75% of the rewards plus any curation profits he gets for upvoting his own post and fighting in the 25%. This doesn't matter whether he does 1 post for $1 or 30 posts for $1000 each.

A better system might be to develop a steem profit % diminishing returns system that only targets the top 25% of steem authors by value. That's to say it would target everybody but you're really only going to see massive profit nerfing if you're among the top 20% earners on steemit in a day.

So if haejin has say 10 million steem power upvoting him in a 24 hour period and that accounts for say x% of the entire steem power upvote pool used that day and as we know its around 7% of the steem reward pool profit a nerf should lower his author reward rate for that 24hr period to account for all the upvoting he received thus pushing more rewards to the curators that upvoted him and away from him while still giving him a healthy portion for his efforts.

If 428,000 steem were rewarded in 1 24hr window and his upvotes were worth $30,000 (7%) these are just examples i have no idea what the actual daily steem rewards are. However if thats the case he should be scaled back by say 80% per 1% of the global pool. So in his case his 75% author reward would be scaled by 7 times by 80% granting him just 15.73% rewards instead of 75% for a daily income of $4,718.59 steem instead of the $22,500.00 he'd currently get for 75% of $30,000 of upvotes in a single day.

This system could even double the curator rewards with some of his scaled back points to reward fans but it would not be required.

It might look something like this.

I just came out of my typing frenzy and realised this is still a comment i might try a cleaner and more organised version of this post later in an actual post lol.