I also really like the Reddit forum / discussion UI. It makes it very easy to see who is replying to what, and let's you easily hide or collapse away whole uninteresting side-conversations.
I fear any "Facebook-style" visual embellishments will actually make it harder to discover the underlying conversations...
I don't want a flashy link aggregator, I want bare bones design with a link/img and discussion. That's it.
Anything that tries to model its UX/design on Facebook loses my interest immediately.
"Please select the interface you want: New flashy Facebook-like mode® or Boring text mode®."