Ask pg: can we have last comment time in the crumb after the title?

It'd be good to have -

You've Got Blackmail: The AOL Account That Wouldn't Die (wsj.com) 43 points by quoderat 6 hours ago | 14 comments (20 minutes ago)

instead of

You've Got Blackmail: The AOL Account That Wouldn't Die (wsj.com) 43 points by quoderat 6 hours ago | 14 comments

I'd appreciate a way to quickly inspect to see if a thread is still being discussed.

(and, while here, some way to mark comments as read, perhaps with collapsing or some other form?)