Adding Reddit functionality to Wordpress's BBpress plugin

You'll be transforming the BBpress plugin into Reddit: 1) Multiple levels of threaded replies 2) Sorting replies within each level by the number of upvotes (which come from another plugin) 3) Logic for automatically collapsing certain levels of threads based on votes (see [login to view URL] for example) 4) Modifying the existing voting plugin to record how many total upvotes each user has recieved on all of their posts 5) Including comments so code is easy to read and understand 6) All work must of course be done with a plugin as opposed to modifying BBpress core code You must show experience with Wordpress plugins, and ideally with BBpress to be considered.