You brought up some great points Adham. I have found that the community is split. Many users just scan titles, and this redesign works much better for that. Other users want the full context presented together, which is represented in the current version of Hacker News.
I agree that user testing (along with many other design methods) is needed if this was a real project. And by posting this I have gotten a lot of great feedback on how to improve this design from passionate Hacker News users.
By the way, you have some really great work in your portfolio.