I agree 100% with 5 minute rule. I believe 30 mins. does not work.
But what I would like to see is a sliding scale the author can choose on what % to share with curators. If I share 80% of my post rewards with curators, then I am likely to get more views and votes because the curators have more incentive to read my posts. Then after people realize I have good content and like what I post maybe I can then change my rules to 50% or 60% or whatever I feel like giving curators.
So to end with. I like the 5 min. rule and also a sliding scale that gives author choice on what % for rewards
I'll raise you right up to 99%. I want engagement, so I might even go higher.