The new iteration story board is terrible. They arbitrarily decided to group tasks by those that had a parent task and stuffed all the other "orphaned" tasks at the bottom of the page. Now all the backlog grooming and prioritization of tasks that we did comes to nothing when we try to pull tasks off the top of the "New" pile and work on them. I have no idea how it made it past QA. I love that they've built the foundation for splitting tasks up by attributes, but I have no idea why they went with parent task rather than project, assigned user, or just nothing.