It wouldn't be exactly like Reddit, for instance on Reddit most threads are sorted by new or best, and that can be hard to follow. We'd still follow the chronological order of threads.If nested threads mean it looks like reddit then no way. I really don't get on with that whenever I've tried to use that site.
Clean up gets my vote
I understand what you mean, I think you might enjoy how nested threads breaks things up a bit. I'll trial an alternate colour.Not sure if here is the place to ask, but I would like to see some separation in user posts.
Maybe comment 1 could be on a white background, then comment 2 slightly grey or something, comment 3 back to white. Alternating the background colour each post. For me, I think it would be clearer on the eye to see each new comment / post.
I've explained it horribly but hopefully someone knows what I mean!