It is impossible for the platform to reward high quality content.
First of all, you will never attract creators with any talent to Steem. Best case scenario, is to provide a place that might reward a content creator as he is developing his skill set - and before he goes mainstream and moves on.
Second, most users aren't very good at picking out high quality content.
Third, "high quality" is subjective - you will never get anything close to a consensus as to what constitutes high quality. For example, younger audiences prefer political memes to political essays. Which one gets the upvotes is more determined by demographics than content quality.
Fourth, you will never get people to upvote a 'stranger' over upvoting her 'friend'. This is a form of social media. People will reward friends and family members first. (As they should).
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