[DigitalSea]

There is a similar plugin for Reddit called the Reddit Enhancement Suite, it's a pretty well made plugin, so maybe a plugin along the lines of HN Enhancement Suite where it kind of tidies and fixes things up would be somewhat cool.

Definitely agree about the disappearing gems in the comments section. Being able to follow users would be cool as well, their comments would be moved and highlighted with a particular follow colour.

I am liking the sound of this.