Another thing to consider is to have Categories for new post. so easy to scroll through and does not get lost on 2nd page.

YOU can have the categories in the drop down of "New" post link. You can a have "view all" as an option as well.

You can have the category fields as a requirement when filling out the submission form.

I hope the PTB of HN consider this.

wow even this post is getting voted down already. HMMM