I, too, would like to see Stacks supported in iOS. I use Awesome Note (AN) for to-do lists in conjunction with Evernote (EN) for synchronization. This adds AN folders as notebooks to EN. On Windows, I can group the AN notebooks into a single stack to keep things neat. But on iOS it becomes somewhat of a wasteland. Sure, I can quickly find something in particular through tags. But sometimes I just want a quick overview of how the stacks, notebooks and notes are organized - especially when I haven't used a certain stack in a while. That's where I find myself waiting until I can get to a workstation client for a clearer perspective.