[BrianM]

My understanding of this design decision is that the Show Next Actions view is meant to show a only small list of possible actions to take, and therefore shows only a small piece of everything that you need to get done. I think the idea is that you'll manually arrange the parallel projects to put more important tasks near the top, and hence only those at the top are shown in the next view. (At least this is how I work with the Show Next Actions view.)

This would be addressed if there were Perspectives on the iPhone version.