[pjb]

makesense, I suspect you have the preference to empty the inbox for actions which have at least a project since you avoid using contexts for some available actions. I require both project and context to be assigned before an action can be available (not to say I don't sometimes work out of my inbox). I suspect my preference setting is the majority setting so our sense of "available" and how to make the program reflect that is going to differ and it may lead to some confusion and frustration.

To get back to your first question about Projects with Contexts, sometimes the Project or Group IS the last action or is code for "review me just in case there are more actions" which is also an action. Since it can serve as an action is must be able to have a context.