I got one pair of boots and all three of my characters have been rank 5 for two days now. That being said, I only played a couple hours of IB each day throughout the week. The drops rates don't actually seem that bad, I saw a lot of History's, class items, and boots drop. A few sidearms. One thing I didn't see drop was the Pulse, but I feel like most people stop farming once they hit rank 5. The drop rate is noticeably higher than it was before. And people like to complain about having to use marks but this is the first IB that I got everything I wanted and didn't have to farm for glimmer. Which, I believe, is what Bungie was going for.