Vanessa - I think you are talking about something different than Breadcrumbs. You are talking about how the latest posts are displayed at the top of the Forum by topic with the most recent at the top. Breadcrumbs is asking that the actual posts within a topic are displayed with the latest at the top.
Breadcrumbs - we actually disagree with your request for thread posts in reverse order - you cannot follow a conversation in reverse. None of the many food forums that I follow (including ChowHound and eGullet) show posts in reverse chronological order. I think that they all assume you want to follow the course of the conversation.
However what they do, and EYB does too, is allow you to go to the latest post or to the last unread (by you) post. There are two icons to the right of the thread name and date/time details - hover your mouse over and you will see one is "Go to last post" and the other is "Go to last unread". This means you can skip all the thread that you have already read, which achieves the same purpose you want, without new readers having to read backwards when they want to follow a thread from the beginning.