'next actions' vs 'project-specific sometime-soon actions'

[ihunter]

Question is, what is the best place to park 'project-specific someday-soon-next-actions'?

I would put it in your project support material; if that's a Task in Outlook, make a note in the free form text area. The point is, whenever you do a review of your project and looks for next actions, you should see this reminder, for when you eventually need it, but it shouldn't clutter your lists, as you said.