Can someone please point me out towards resource explaining these new super nodes, when they will be available, detailed reward structure etc.

I see 20% of the block will go to the node operator which means much lower reward for the miners, right.

I see it will require 500 Zen which is 12x more compared to the standard node. Yet, the reward will be 6x higher. So why would anyone set up super node as opposed to running bunch of small, standard nodes?

What do I miss here?