[Ken Case]

Sorry for the lack of response from Omni in this thread—we've just been heads-down working on OmniFocus 2 lately, trying to get the basic app polished up and all our Pro features in place. (We just got v2 to the point where it can load arbitrary Perspectives again a few hours ago.)

Our thinking has evolved on this over the years, and we do plan to add support for creating arbitrary lists of tasks which cut across projects and contexts. But this functionality isn't planned for the initial v2.0 release, since we want to ship that release as soon as possible.

[Ken Case]

By the way, the way to implement this workflow in OmniFocus right now is to use #hashtags in notes, creating saved context-mode perspectives which search for those #hashtags. Those perspectives will sync from the Mac to the iPhone app, so you can quickly get to those lists wherever you are.