Thanks for bringing this up!
We definitely have some challenges ahead of us with helping to present large threaded discussions, and providing an easy to understand path of revealing quality content (as well as providing an easy to use path of discovering and navigating through all content).
We started off with a relatively simplistic approach, and are excited to think outside of the box and bring forth solutions to these community discussion problems. We released this system early with such a simplistic approach because we value community feedback above all, so we felt like we should solve this problem together.