I don't like how it doesn't automatically take me to the last page of the thread.
If you have already read the thread, and there are no new replies in the thread, it will take you to the first page. It assumes you want to read everything again, else why would you click a thread you have already read but to start over.
If you have never read the thread, and its brand new, it will take you to the first post because that's your first unread post.
If you have read the thread before and there are new posts it will take you to the first unread post in that thread.