"Also, it would be good if posts that have made it to the front page were removed from the new page freeing up even more space."
I would really dislike it if those stories were removed. If it's only been an hour or two since I've gone through the front page then it's unlikely that there will be more than a couple of new stories there. Instead of rereading every title on the front page I can just go to the new page and scan for articles with scores above whatever threshold I'm in the mood for until I recognize one of them. Giving some indication that a post has been flagged might be nice but I don't see why having the new front page stories on the new page is a bad thing.
I would really dislike it if those stories were removed. If it's only been an hour or two since I've gone through the front page then it's unlikely that there will be more than a couple of new stories there. Instead of rereading every title on the front page I can just go to the new page and scan for articles with scores above whatever threshold I'm in the mood for until I recognize one of them. Giving some indication that a post has been flagged might be nice but I don't see why having the new front page stories on the new page is a bad thing.