Inbox items on the Focus list

When we set focus to an Inbox item then it doesn’t appear in the Focus list because of the active Area filter.
I think there should be a section names Inbox to show starred items from the inbox independently on the active Area filter

Or you just pre process those items and tag them with the correct area - shouldn’t be that much effort.

For me definitely, there should be a way to include a particular item to the focus list independently of the current area selected. It is quite often when during the work time(work area selected) we have something to do from private stuff like make a call.
Nirvana has a simple solution for this. There is an option to always include or always exclude items without any areas.

Any thoughts on this matter?