I'd like it if the stats got locked in after the day is over.
If a user is in first place for a day two days ago, I can simply go back and vote on lots of posts from another user from that day and change the results. It should be like a voting system that ends at midnight each day.
Oooh, I really hope the sidebar blocks can be customized per forum (or category, in other parts of the site). This would be a perfect way to link content from various parts of my site. For example, in my forum for discussing upcoming conferences, I could have a feed block from my custom conferences database showing the upcoming conferences, or a block with links to external websites for those conferences. Likewise, in my conferences database, I could have a feed block showing all recent forum topics from my conference discussions forum.