[iNik]

You should now be able to work a project all the way through to completion simply by checking off its Next Actions one at a time in context mode.

ONLY if all the child actions are in the same context. Otherwise they're divided from the project and not displayed.

If you want to work a project through to completion, just click the "switch" button to go to the Project mode and check off your actions for that project. Isn't the project mode where you SEE actions-by-project, after all?

Alternately, if you want to see all the contextually-available actions for a given project, group by project and change the filter to show remaining actions, rather than available/next actions. Then you've got what you need.

This is the thing, all of these circumstances are well covered and done so in a way that is consistent with the design of the app. If I wanted to conflate projects and actions, I would be much better served with a free tagging system, rather than an app with two clearly defined views.